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CoroJewelryPatents.com Vintage Coro and Corocraft jewelry design patents. Vintage Designer Signed, Coro and Corocraft Jewelry for sale, Coro history, advertising and examples.
https://www.morninggloryjewelry.com/articles/jewelry-patents/coro-patents/
Coro and Trifari are responsible for almost half of all jewelry design patents up through the middle 1950’s. Philippe for Trifari patents seem to disappear after about 1954, and Katz for Coro after 1965. Jewelry Design Patents – (all approximations): From 1858 – 1925 1,203 Jewelry Design Patents Granted From 1925 – 1955 6,528 Jewelry Design Patents Granted
https://imageevent.com/clios_vintage_jewelry/coropatents
CORO DESIGNERS. The career of Adolf Katz, Coro’s head designer, spanned nearly 40 years. According to patent records he appears to be a remarkably talented and prolific designer, holding more jewelry design patents in his name than anyone else in the industry. Much of Coro’s incredible business success is attributable to Katz and Coro’s diverse, beautiful and imaginative jewelry lines are …
https://www.demarctreasures.com/coro-patents.html
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. 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.
https://imageevent.com/clios_vintage_jewelry/coropatents/coropatentsfiguralbirds
151827 Coro Bird On Floral Branch Brooch 48 Patent number supplied by Sherry Jones of Glitter Gals: enlarge 43KB, 640x449 211 152105 Coro Katz Eagles Locket Brooch 48: enlarge 27KB, 640x403 212 153067 Coro Katz Bird on Branch Brooch 49 Patent number supplied by Sherry Jones of Glitter Gals: enlarge 23KB, 640x484 213 153697 Coro Katz Jeweled Bird Pin Clip 49
https://www.costumejewelrycollectors.com/vintage-costume-jewelry-research/costume-jewelry-marks/the-history-and-marks-of-coro-jewelry/
Aug 24, 2019 · **According to Jim Katz, the first instance of Coro necklaces using a J hook is July 15, 1948 as noted in patent record research. Coro manufactured most of their own jewelry. However, when needed, they would have other companies make some of their jewelry. Hedison manufactured some jewelry for Coro.
https://www.myclassicjewelry.com/blog/vintage-jewelry-patents/
Sep 05, 2014 · Coro Pegasus Egg Basket Faux Moonstones Brooch patented in 1941. Beginning in 1955, jewelry designs were allowed to be copyrighted, and jewelry companies could simply stamp their jewelry with the copyright symbol to protect the designs. Jewelry patents then ceased, because the patents were no longer needed.
http://www.patent-search-information.com/jewelrypatents.html
Aug 17, 2014 · To find additional sites with information on jewelry patents, trying doing a search on Google, using these searches as examples "Coro" patents" "jewelry patents" "vintage jewelry" patents. Note: use the quotes around the name of the item you …
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