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Vintage Jewelry Patents: Find and Use them to Date Vintage ...

    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 …

Jewelry Patents UpCounsel 2020

    https://www.upcounsel.com/jewelry-patents
    Nov 09, 2020 · 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…

Jewelry Patents - Patent Search Information

    http://www.patent-search-information.com/jewelrypatents.html
    Aug 17, 2014 · If you already know the patent number of the item, see How to Search by Patent Number to locate the full-text of the patent. Another helpful approach is to find web sitea where …

Patent number Etsy

    https://www.etsy.com/market/patent_number
    Vintage CORO ADOLF KATZ Cameo Pin Brooch Pendant Victorian Revival Patent 121349 Mid Century Jewelry Designer, VivianJoel.com VivianJoel. From shop VivianJoel. 5 out of 5 stars (675) 675 reviews ... because here they come. There are 259 patent number for sale on Etsy, and they cost $30.17 on average. The most common patent number …

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