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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 only 6-digits, add a leading zero, as shown in the illustration below. By the way, I tried …

How To Research Patent Numbers on Jewelry - YouTube

    https://www.youtube.com/watch?v=UeeemgltHSw
    Jul 29, 2016 · www.thetiechest.com - Ever wonder what that patent number means on your piece of jewelry? How old is it? What what is made for? These are all questions that ...Author: The Tie Chest

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 someone else has already done the research to locate jewelry patents.

Comments for what does "PAT" on the clasp mean? Thats the ...

    https://www.antique-jewelry-investor.com/what-does-pat-on-the-clasp-mean-thats-the-only-word-or-number-comments.html
    The Jewelry manufcturer has a copyright on the design of the clasp. I woud say this bracelet is manufactured as there is no Patent number. Clasps and jewelry findings provide a wealth of dating informatio. A great resource on clasps and findings (and with photos so that you can cross reference) I found on clasps and findings can be found Here....

Biddington's: US Patent Numbers Chart for Dating Antiques ...

    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 …

JewelryPatents.com

    https://www.jewelrypatents.com/
    Face Plate for Article of Jewelry; Finding; Finger Ring; Hat Pin; Jewel For Multiple Uses; Jewelry Clasp; Jewelry Clip; Jewelry Component; Jewelry Finding; Jewelry Finding for a Pin; Jewelry Finding for Clips ; Jewelry Pendant; Jewelry Pin; Jewelry Stone Finding; Lapel Pin; Link Bracelet; Link Chain; Link Chain for Bracelet; Link Chain for ...

Understanding Markings on Jewelry LoveToKnow

    https://jewelry.lovetoknow.com/about-jewelry/understanding-markings-jewelry
    Some jewelry pieces, particularly items with unique structural qualities like Italian charm bracelets, may even have a patent number stamped somewhere on them. Typically, the patent number will be in an unobtrusive spot that won't interfere with the look of the piece.

What Is the Meaning of Numbers on Jewelry? LEAFtv

    https://www.leaf.tv/articles/what-is-the-meaning-of-numbers-on-jewelry/
    The value of jewelry made from precious metals is determined by the purity of the gold, silver, or platinum it contains. The number found on jewelry is a karat hallmark and tells …

How to Use Patent Numbers to Date Antiques and Collectibles

    http://www.biddingtons.com/content/investingpatent.html
    Even rookie investors in antiques and collectibles appreciate the importance of age in determining the value of an object. Frequently one finds that sellers guess-timate the age of a piece to show the item in its most favorable light.Weekend collectors--in a post-brunch glow and accompanied by a charming companion--are all too ready to hear the best of an object that has attracted their attention.

Vintage Jewelry Marks: Help for Dating Your Vintage ...

    https://www.myclassicjewelry.com/blog/vintage-jewelry-marks/
    Aug 15, 2014 · Patent and inventory numbers – government or company issued numbers to protect and track jewelry designs Vintage costume jewelry usually doesn’t have purity marks, but will often have a maker’s mark (commonly called the signature), and can sometimes have a …

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