Coro Patents
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You can click on the images below for more detailed information.
You can click on the images below for more detailed information.
1930 Patents
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This is the first patent I was able to find so far for Coro (Cohn & Rosenberger). It was actually a utility patent # 1,783,223 filed for on July 19, 1929 and granted on Dec. 2, 1930.
The designer on record was a man named Royal Marcher. |
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This is the first design patent I was able to find for Coro (Cohn & Rosenberger). It was patent # 82,685 filed for on August 20, 1930 and granted on Dec. 2, 1930. It was actually an ornamental design for a pin for holding gold tees!
The designer on record was a man named Ernest Dauer. |
1931 Patents
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This was the first separable clip I could find. It is a utility patent by designer Gaston Candas and was filed on May 31, 1930 and granted on March 31, 1931. I'm pretty sure it was done for Cohn & Rosenberger but the patent specifications do not list them.
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1933 Patents
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This was utility patent for another separable clip. It was patent # 1,917,325 filed on Dec 1, 1932 and granted on July 11, 1933.
The designer on record was a man named Oscar Placco |
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This was the first patent I could find from Coro's designer Adolf Katz. It is also for a type of separable clip that can be worn together or detached for a different look. It was utility patent # 1,937,347 filed on July 21,1933 and granted on November 28, 1933.
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1935 Patents
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This utility patent was for a more comfortable earring. It was from designer Oscar Placco and was patent # 2,012,401 applied for on Feb 16, 1934 and granted on Aug 27, 1935.
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1936 Patents
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This utility patent that was designed by Royal Marcher for Coro actually opens to a compartment under the stone so that the wearer can place a perfume absorption material! It is utility patent # 2,045,665 filed on April 1, 1935 and granted on June 30, 1936.
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This was utility patent for another separable clip. It was patent # 1,917,325 filed on Dec 6, 1934 and granted on Nov 3, 1936.
The designer on record was Oscar Placco. |
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This is the second design patent I was able to find for Coro. It was an Adolph Katz design of a camera used for a pendant.
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1937 Patents (the first 6 are utility patents and the rest are Adolf Katz designs)
These 3 are monogram utility patents by Ralph Bangs. The center one is a brooch and the other 2 are buttons.
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These 3 are separable utility patents by Oscar Placco
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These 14 are design patents by Adolf Katz
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1938 Patents
These 2 are monogram utility patents and a jewel setting tool by Ralph Bangs
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This patent didn't have a picture but it is a patent for monogrammed handles for brushes and other 'boudoir articles'.
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This patent is actually for a jewel setting tool.
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These 2 are utility patents by Oscar Placco
This one has a separable base to be used for different jewelry ornaments such as pins, brooches, pendants and other articles of jewelry.
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This is actually a clip with a loop that a scarf or similar article can fit through.
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These 2 are design patents by Adolf Katz
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The following are later patents - I still have to put the rest of the 1930's patents on.
1943 Patents
136,505 1943 Brooch
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136,506 1943 Brooch
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136,507 1943 Brooch
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136,832 1943 Brooch
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136,833 1943 Brooch
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136,868 1943 Brooch
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136,998 1944 Brooch
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136,999 1944 Brooch
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137,000 1944 Brooch
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137,001 1944 Brooch
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