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https://www.antique-jewelry-investor.com/what-does-pat-on-the-clasp-mean-thats-the-only-word-or-number-comments.html
PAT stands for PATENT and usually refers to the right granted to anyone who invents any new, useful, and non-obvious process, machine, article of manufacture. The Jewelry manufcturer has a copyright on the design of the clasp.
https://askinglot.com/what-does-pat-mean-on-jewelry
Feb 05, 2020 · PAT. PEND.”) to indicate that the patent had been submitted and was pending approval. Once the patent was approved, companies could then stamp the patent number on the jewelry. In some cases, a design was patented, but the jewelry may not have a patent stamp, as in this lovely 1941 Coro brooch. How do I identify my jewelry markings?
https://www.myclassicjewelry.com/blog/vintage-jewelry-patents/
Sep 05, 2014 · This process could sometimes take months, so once the patent design and specifications were submitted, companies would mark their jewelry “PAT. PEND.” or “DESIGN PAT. PEND.” (sometimes “DES. PAT. PEND.”) to indicate that the patent …
https://www.starcojewellers.com.au/w-jewelry/what-does-pat-mean-on-jewelry.html
Nov 09, 2020 · The patent process could take several months, so companies marked their patent-pending jewelry “PAT. PEND.,” “DESIGN PAT. PEND.,” or “DES. PAT. PEND.” after submitting a patent application to let people know that it was waiting for approval.
http://iantiqueonline.ning.com/xn/detail/1813674:Topic:78759
Feb 25, 2009 · No doubt your PAT PEND mark is an indication that the utility patent for the clip mechanism on your earrings had been applied for. Utiltiy patents, once granted, are good for 17 years. Once patents expire, if not renewed, anyone can copy that design. Permalink Reply by Ellene Meece on February 26, 2009 at 4:03pm
https://www.starcojewellers.com.au/w-jewelry/what-does-pat-pend-mean-on-jewelry.html
Nov 09, 2020 · The patent process could take several months, so companies marked their patent-pending jewelry “PAT. PEND.,” “DESIGN PAT. PEND.,” or “DES. PAT. PEND.” after submitting a patent application to let people know that it was waiting for approval.
https://www.upcounsel.com/jewelry-patents
Nov 09, 2020 · Businesses protect their investments with patents. The patent process could take several months, so companies marked their patent-pending jewelry “PAT. PEND.,” “DESIGN PAT. PEND.,” or “DES. PAT. PEND.” after submitting a patent application to let …
https://abbreviations.yourdictionary.com/articles/list-of-standard-jewelry-abbreviations-with-meanings.html
Standard Jewelry Abbreviations for Metals. Jewelry can be made from a variety of metals, including gold, silver, and platinum. Each piece is stamped to mark its metal content, and you can also use the abbreviation to tell if the piece is plated or solid.
https://www.leaf.tv/articles/what-is-the-meaning-of-numbers-on-jewelry/
What do those barely discernible numbers inside a ring or on the back of a charm mean? 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 you how much of a metal is in that piece.
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