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Patent Models

Patent models were required as part of a patent application for a United States patent until 1880. The Patent Act of 1790 required a miniature model of each invention be made that showed how the invention works. In 1926 the stored patent models were sold as a group by the U.S. Patent Office and individual models are appearing in the marketplace.


 
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(Patent Models | Advertising & Store Collectibles Price Guide) eBay Auctions

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Category Patent Models
Credits
Pattern or Item Dental Chair Headrest
Description Wood, Steel Brackets, Rods, No. 171539, E.T. Starr, 1875
Year Priced 2008
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