During September I will be adding examples and more information.
The first 14 are Cohn & Rosenberger., Inc.  On June 24, 1943 company changed their name from Cohn & Rosenberger, Inc to Coro, Inc. (the "Co" from Cohn and the "ro" from Rosenberger.)
​I also just noticed that the popular Coro Pegasus mark was first used in June of 1945!
COHN & ROSENBERGER. INC.
​First used July 1919
Word Mark CORO
Goods and Services (CANCELLED) IC 014. US 028. G & S: Chain and Bead Necklaces, Imitation Pearls, Slipper and Belt Buckles, Collar and Cuff Buttons, Shirt-Studs, Bar-Pins, Brooches, Hatpins, Watchchains, Watch-Charms, Finger-Rings, Bracelets, Hair Ornaments, Beads for Necklaces, Vanity-Cases, and Lavallieres, which Articles Are Made of, Plated with, or Mounted in Precious Metal-i.e., Sheffield Silver, Sterling Silver, and Gold-Plate on Brass Foundation. FIRST USE: 19190700. FIRST USE IN COMMERCE: 19190700
Serial Number 71129049
Filing Date March 1, 1920
COHN & ROSENBERGER. INC.
​First used July 1919
​Word Mark COROLITE
Goods and Services (EXPIRED) IC 014. US 028. G & S: JEWELRY FOR PERSONAL WEAR, NOT INCLUDING WATCHES, METAL PENCILS, VANITY CASES, PUFF BOXES, COIN PURSES, MESH BAGS AND METAL PURSES, ALL OF PRECIOUS METAL OR PLATED WITH PRECIOUS METAL, AND NECKLACE SETS CONSISTING OF BEADS OF PRECIOUS METAL OR PLATED WITH PRECIOUS METAL OR OF IMITATION PEARL, COMPOSITION, OR BASE METAL
Serial Number 71185813
Filing Date September 15, 1923
COHN & ROSENBERGER. INC.
​First used before the filing date of Jan 1925
Word Mark THE AVENUE
Goods and Services (EXPIRED) IC 014. US 028. G & S: BRACELETS, BAR PINS, BROOCHES, EARRINGS, NECKLACES, AND FOR MESH BAGS, POWDER COMPACT CASES, AND VANITY CASES MADE OF OR PLATED WITH PRECIOUS METAL
Serial Number 71208043
Filing Date January 13, 1925
COHN & ROSENBERGER. INC.
​First used in 1921
​Word Mark DEBUTANTE
Goods and Services (EXPIRED) IC 014. US 028. G & S: PEARLS AND PEARL NECKLACES. FIRST USE: 19210100. FIRST USE IN COMMERCE: 19210100
Mark Drawing Code (1) TYPED DRAWING
Serial Number 71215402
Filing Date June 6, 1925
​COHN & ROSENBERGER. INC.
​First used in 1929
Word Mark DUETTE
Goods and Services (EXPIRED) IC 014. US 028. G & S: FINGER RINGS, NECKLACES, BRACELETS, EARRINGS, AND BROACHES, AND FOR HATPINS, HAT ORNAMENTS, NECKLACE CLASPS, VANITY CASES, CIGARETTE CASES, MESH BAGS, AND MESH-BAG FRAMES, MADE WHOLLY OR IN PART OF OR PLATED WITH PRECIOUS METAL. FIRST USE: 19291001. FIRST USE IN COMMERCE: 19291001
Serial Number 71291817
Filing Date October 31, 1929
COHN & ROSENBERGER. INC.
​First used Feburary 15, 1933
Word Mark STREAMLINE
Goods and Services (EXPIRED) IC 014. US 028. G & S: STRINGS OF PEARLS, NECKLACES, BRACELETS, EARRINGS, FINGER RINGS, BROOCHES, BAR PINS, AND ORNAMENTAL HAT PINS AND PINS FOR DRESS ORNAMENTS, ORNAMENTAL PINS AND BUCKLES FOR DECORATING HATS, ORNAMENTAL SHOE BUCKLES AND HAIR ORNAMENTS, MADE WHOLLY OR IN PART OF OR PLATED WITH PRECIOUS METAL. FIRST USE: 19330215. FIRST USE IN COMMERCE: 19330215
Serial Number 71347717
Filing Date February 23, 1934
​COHN & ROSENBERGER. INC.
​First used November 18, 1935
Word Mark DEBUTANTE
Goods and Services (EXPIRED) IC 014. US 028. G & S: COMB CASES, CIGARETTE CASES [COMPACTS,] INITIALS, LOCKETS, PENDANTS, EVENING BAGS, CLIPS, CONTAINERS, BUCKLES, HAT ORNAMENTS, ALL MADE WHOLLY OR PARTLY OR PLATED WHOLLY OR PARTLY WITH PRECIOUS METALS, AND STONES FOR SETTING, AND OTHER JEWELRY FOR PERSONAL WEAR OR ADORNMENT, NOT INCLUDING WATCHES. FIRST USE: 19351118. FIRST USE IN COMMERCE: 19351118
Serial Number 71373200
Filing Date December 31, 1935
​COHN & ROSENBERGER. INC.
​First used March 1, 1937
Word Mark ANDREE
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES AND BRACELETS, FINGER RINGS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS, AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METAL OR PLATED WITH THE SAME: BEADS, PINS, HAT ORNAMENTS, HAIR ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, CIGARETTE CASES, FANCY CIGARETTE BOXES, FANCY BUCKLES, AND JEWELRY INITIALS. FIRST USE: 19370301. FIRST USE IN COMMERCE: 19370301
Serial Number 71390264
Filing Date March 19, 1937
​COHN & ROSENBERGER. INC.
​First used sometime before the filing date in July 1941
Word Mark MOON BEAM BY CORO
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES AND BRACELETS, FINGER RINGS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METAL OR PLATED WITH THE SAME: BEADS, PINS, HAT ORNAMENTS, HAIR ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, CIGARETTE CASES, CIGARETTE BOXES, FANCY BUCKLES, AND JEWELRY INITIALS
Design Search Code 01.11.01 - Full moons (not a moon with craters)
25.01.25 - Borders, ornamental; Other framework and ornamental borders
26.01.07 - Circles with a decorative border, including scalloped, ruffled and zig-zag edges
26.11.16 - Rectangles touching or intersecting
26.11.28 - Miscellaneous designs with overall rectangular shape; Rectangular shapes (miscellaneous overall shape)
Serial Number 71445803
Filing Date July 31, 1941
​COHN & ROSENBERGER. INC.
​First used before the filing date of September 1941
Word Mark CORO CRAFT
Goods and Services(EXPIRED) IC 026. US 028. G & S: NECKLACES, BRACELETS, FINGER RINGS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS, AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METAL OR PLATED WITH THE SAME; BEADS, PINS, HAT ORNAMENTS, HAIR ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, CIGARETTE CASES, FANCY CIGARETTE BOXES, FANCY BUCKLES, AND JEWELRY INITIALS
Serial Number 71447094
Filing Date September 17, 1941
​COHN & ROSENBERGER. INC.
​First used before the filing date of December 1941
Word Mark DAY AND NIGHT
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES AND BRACELETS, FINGER RINGS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS, AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METALS OR PLATED WITH THE SAME: BEADS, PINS, HAT ORNAMENTS, HAIR ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, CIGARETTE CASES, FANCY CIGARETTE BOXES, FANCY BUCKLES AND JEWELRY INITIALS
Serial Number 71449091
Filing Date December 2, 1941
​COHN & ROSENBERGER. INC.
​First used before the filing date of November 1942
Word Mark SCINTILLA
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES AND BRACELETS, FINGER RINGS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS, AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METAL OR PLATED WITH SAME: BEADS, PINS, HAT ORNAMENTS, HAIR ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, FANCY CIGARETTE BOXES, FANCY BUCKLES, AND JEWELRY INITIALS
Serial Number 71456865
Filing Date November 17, 1942
​COHN & ROSENBERGER. INC.
​First used before the filing date of January 1943
Word Mark CORO RADIANCE
Goods and Services(EXPIRED) IC 014. US 028. G & S: NECKLACES AND BRACELETS, EARRINGS, JEWELR Y CLIPS, BROOCHES, LOCKETS; AND THE FOLLOWING FOODS MADE IN WHOLE OR IN PART OF PRECIOUS METAL OR PLATED WITH THE SAME; BEADS, PINS, HAT ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, FANCY CIGARETTE BOXES, FANCY BUCKLES, AND JEWELRY INITIALS
Design Search Code 26.01.21 - Circles that are totally or partially shaded.
26.09.02 - Plain single line squares; Squares, plain single line
26.09.12 - Squares with bars, bands and lines
26.09.21 - Squares that are completely or partially shaded
Serial Number 71457929
Filing Date January 15, 1943
​COHN & ROSENBERGER. INC.
​First used before the filing date of February 1943
Word Mark RAPTURE BY CORO
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES, AND BRACELETS NOT INCLUDING WATCHES, FINGER RINGS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS; AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METAL OR PLATED WITH SAME: BEADS, PINS, HAT ORNAMENTS, HAIR ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, FANCY CIGARETTE BOXES, FANCY BUCKLES AND JEWELRY INITIALS
Serial Number 71458455
Filing Date February 10, 1943
On June 24, 1943 company changed their name from Cohn & Rosenberger, Inc to Coro, Inc. (the "Co" from Cohn and the "ro" from Rosenberger.)
CORO, INC.
​Word Mark CORO SUPREME
Goods and Services (EXPIRED) IC 014. US 028. G & S: PEARL NECKLACES, PEARLS AND JEWELRY FOR PERSONAL WEAR OR ADORNMENT NOT INCLUDING WATCHES
Serial Number 71463166
Filing Date September 2, 1943
​CORO, INC.
​Word Mark THOROBREDS
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES, BRACELETS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS, AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METALS OR PLATED WITH THE SAME: BEADS, PINS, HAT ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, ((FANCY CIGARETTE BOXES, FANCY BUCKLETS)), AND JEWELRY INITIALS.
Serial Number 71466004
Filing Date December 23, 1943
​CORO, INC.
​ Word Mark QUEEN BEES
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES, BRACELETS, NOT INCLUDING WATCHES, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS, AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METAL OR PLATED WITH THE SAME: BEADS, PINS, HAT ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, FANCY CIGARETTE BOXES, FANCY BUCKLES AND JEWELRY INITIALS
Serial Number 71469926
Filing Date May 4, 1944
​CORO, INC.
​Word Mark RAMBLING ROSES
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES AND BRACELETS, NOT INCLUDING WATCHES, FINGER RINGS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS, AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METAL OR PLATED WITH THE SAME BEADS, PINS, HAT ORNAMENTS, HAIR ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, CIGARETTE CASES, FANCY CIGARETTE BOXES, FANCY BUCKLES, AND JEWELRY INITIALS
Serial Number 71471700
Filing Date June 27, 1944
CORO, INC.
​Word Mark SOUTHERN BELLE
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES, BRACELETS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS, AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METALS OR PLATED WITH THE SAME: BEADS, PINS, HAT ORNAMENTS, COMB CASES, FANCY CIGARETTE BOXES, FANCY BUCKLES AND JEWELRY INITIALS
Mark Drawing Code (3) DESIGN PLUS WORDS, LETTERS, AND/OR NUMBERS
Design Search Code 02.03.04 - Colonial dress, women wearing; Hoop skirts (women wearing); Pilgrims, women; Women, Pilgrims, women in colonial dress or hoop skirts
Serial Number 71471701
Filing Date June 27, 1944
​CORO, INC.
Word Mark NIGHT OWLS
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES, BRACELETS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS, AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METALS OR PLATED WITH THE SAME; BEADS, PINS, HAT ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, FANCY CIGARETTE BOXES, FANCY BUCKLES, AND JEWELRY INITIALS. FIRST USE: 19440500. FIRST USE IN COMMERCE: 19440500
Serial Number 71474655
Filing Date September 27, 1944
​CORO, INC.
Word Mark CORO ELEGANTE
Goods and Services (EXPIRED) IC 014. US 028. G & S: PEARL NECKLACES, PEARL EARRINGS, PEARL BRACELETS, PEARL BROOCHES, PEARL RINGS, PEARLS AND JEWELRY FOR PERSONAL WEAR OR ADORNMENT NOT INCLUDING WATCHES
Serial Number 71476051
Filing Date November 3, 1944​
​CORO, INC.
Word Mark DEBUTANTE
Goods and Services (EXPIRED) IC 014. US 028. G & S: PEARL NECKLACES, PEARL EARRINGS, PEARL BRACELETS, PEARL BROOCHES AND PEARL RINGS. FIRST USE: 19351118. FIRST USE IN COMMERCE: 19351118
Serial Number 71476662
Filing Date November 20, 1944
​CORO, INC.
Word Mark CORO-TEENS
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES,BRACELETS, NOT INCLUDING WATCHES, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS, AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METALS OR PLATED WITH THE SAME; BEADS, PINS, HAT ORNAMENTS, HOLDERS FOR FACE POWDER, COMPACTS, COMB CASES AND JEWELRY INITIALS.
Serial Number 71477493
Filing Date December 13, 1944
​CORO, INC.
Word Mark COLLEGIATE
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES, BRACELETS, NOT INCLUDING WATCHES, RINGS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METALS OR PLATED WITH THE SAME: BEADS, PINS, HAT ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES AND JEWELRY INITIALS. FIRST USE: 19220101. FIRST USE IN COMMERCE: 19220101
Serial Number 71479665
Filing Date February 10, 1945
​CORO, INC.
Word Mark FOR THAT PRICELESS LOOK
Goods and Services (EXPIRED) IC 014. US 028. G & S: PEARL NECKLACES, PEARL EARRINGS, PEARL BRACELETS, PEARL BROOCHES, PEARL RINGS, PEARLS AND JEWELRY FOR PERSONAL WEAR OR ADORNMENT NOT INCLUDING WATCHES-NAMELY, NECKLACES, BRACELETS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS; AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METALS OR PLATED WITH THE SAME-NAMELY, BEADS, PINS, HAT ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, FANCY CIGARETTE BOXES, FANCY BUCKLES, AND JEWELRY INITIALS. FIRST USE: 19440100. FIRST USE IN COMMERCE: 19440100
Serial Number 71483422
Filing Date May 16, 1945
​CORO, INC.
Word Mark CORO
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES, BRACELETS, FINGER RINGS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS, IMITATION PEARLS, AND PEARL NECKLACES, AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METALS OR PLATED WITH THE SAME: BEADS, PINS, HAT ORNAMENTS, HOLDERS FOR POWDER COMPACTS, COMB CASES, AND JEWELRY INITIALS. FIRST USE: 19450600. FIRST USE IN COMMERCE: 19450600
Design Search Code 04.05.03 - Horses, winged (Pegasus); Pegasus (winged horse)
26.13.02 - Plain single or multiple line quadrilaterals; Quadrilaterals (single line or multiple line)
Serial Number 71489900
Filing Date October 13, 1945
​CORO, INC.
Word Mark CORO CRAFT
Goods and Services (EXPIRED) IC 014. US 028. G & S: NECKLACES, BRACELETS, FINGER RINGS, EARRINGS, JEWELRY CLIPS, BROOCHES, LOCKETS, AND THE FOLLOWING GOODS MADE IN WHOLE OR PART OF PRECIOUS METALS, OR PLATED WITH THE SAME; BEADS, PINS, HAT ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES AND JEWELRY INITIALS. FIRST USE: 19380300. FIRST USE IN COMMERCE: 19380300
Design Search Code 04.05.03 - Horses, winged (Pegasus); Pegasus (winged horse)
26.13.02 - Plain single or multiple line quadrilaterals; Quadrilaterals (single line or multiple line)
Serial Number 71489901
Filing Date October 13, 1945
​CORO, INC.
Word Mark ATOMIC
Goods and Services (EXPIRED) IC 014. US 028. G & S: FINGER RINGS, EARRINGS, JEWELRY CLIPS, BROOCHES, AND THE FOLLOWING GOODS MADE IN WHOLE OR IN PART OF PRECIOUS METALS OR PLATED WITH THE SAME; BEADS, PINS, HAT ORNAMENTS, HAIR ORNAMENTS, HOLDERS FOR FACE POWDER COMPACTS, COMB CASES, CIGARETTE CASES, FANCY BUCKLES, AND JEWELRY INITIALS. FIRST USE: 19451001. FIRST USE IN COMMERCE: 19451001
Serial Number 71494031
Filing Date December 29, 1945
​CORO, INC.
Word Mark COQUETTE
Goods and Services (EXPIRED) IC 021. US 002. G & S: COMPACTS FOR CONTAINING COSMETICS MADE OF PLASTIC AND SOLD IN TRADE EMPTY. FIRST USE: 19451001. FIRST USE IN COMMERCE: 19451001
Serial Number 71494032
Filing Date December 29, 1945