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https://www.myclassicjewelry.com/blog/vintage-jewelry-patents/
Sep 05, 2014 · Note that Design patents, which includes vintage jewelry patents, must begin with the capital letter “D” followed by a 7-digit number. If your patent number is only 6-digits, add a leading zero, as shown in the illustration below. By the way, I tried …
https://www.jewelrypatents.com/
Vintage Jewelry Patents. © 2013 Pretty Snazzy Jewelry & Supplies. JewelryPatents.com is hosted and maintained by Pretty Snazzy Jewelry & Supplies.
https://www.upcounsel.com/jewelry-patents
Nov 09, 2020 · Patents from before 1976 are stored as PDF files. Design patents, including jewelry patents, should start with the letter D and have seven numbers. If the patent only has six numbers, add a zero at the beginning. After you enter the number, you'll see the first page.Estimated Reading Time: 9 mins
https://www.costumejewelrycollectors.com/vintage-costume-jewelry-research/research-resources/mechanical-and-utility-jewelry-patents/vintage-jewelry-patents-2/
Aug 24, 2019 · Visit the US Patent Website! Also, visit Jewelry Patents, a large patent resource Jewelry Patents. Definitions: A Design Patent only protects the appearance of an article, not it’s structural or functional features, and is usually used for decorative items. A Utility Patent protects the structure and function of the invention.Estimated Reading Time: 30 secs
http://www.patent-search-information.com/jewelrypatents.html
Aug 17, 2014 · Jewelry patents are great sources of information for collectors and designers. Included listings of jewelry design patents are especially useful for collectors of vintage jewelry. Also use this site to search for more jewelry patents.
http://www.biddingtons.com/content/patentchart.html
United States Patent Dates and Numbers 1836-1990 The United States Patent Office started issuing patent numbers in 1836. An amazing variety of 19th and 20th century American antiques, jewelry and collectibles are marked with the patent number identifying the year that the object was patented. 1836: 1 - …
http://www.biddingtons.com/content/investingpatent.html
What follows on this linked Biddington's page is a sort of vintage chart for patented objects: it cross-references the patent number with the year in which the patent was issued. If an item was produced over a long period of time, this chart will tell you the earliest date it could have been made .
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