Mechanical and Utility Jewelry Patents 1911-1929Mechanical and Utility Jewelry Patents 1911-1929Mechanical and Utility Jewelry Patents 1911-1929Mechanical and Utility Jewelry Patents 1911-1929
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            United Jewelry Show Catalog 1956
            August 24, 2019
            Mechanical and Utility Jewelry Patents 1930-1939
            August 24, 2019

            Mechanical and Utility Jewelry Patents 1911-1929

            Published by Mark Lewis on August 24, 2019
            Categories
            • Mechanical and Utility Jewelry Patents
            • Research Resources
            Tags
            • brooch clasp
            • brooch clips
            • earring clips
            • Findings
            • history of patents
            • mechanical jewelry patents
            • pinstems
            • utility jewelry patents

            Costume Jewelry Collectors
            Presents
            an original publication by RCJ and Dorothea Stringfield

            Jewelry Patents 1911 - 1929

            Dotty's friend Mary Walden-Till of the UK is responsible for these pages of utility patents. Her dedication in searching the US patent website and willingness to share her findings is greatly appreciated.
            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.
            1900 - 1929
            1930 - 1939
            1940 - 1959
            1961 - 1971

             

            *Written permission necessary to use information or pictures from this site in any other publications, written or electronic.

            Spaney & Maye 1006506, 1911

            Jacobsen 1,068244 Hair Pin 1913

            Stone 1,469,450 Hair comb 1923

            Voskerchian 1,660,181 Cameo brooch 1928

            Dufau 1,717,374 Brooch with removable letters 1929

            Kaufer 1,716,640 Brooch Bar Pin 1929

            Johnson 1,722,423 Watch Fob Brooch 1929

            Researching Costume Jewelry -- Home

            Copyright 1997 to present — www.costumejewelrycollectors.com — All Rights Reserved.
            Original RCJ publications pages created and or authored by Dorothea Stringfield

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            Mark Lewis
            Mark Lewis

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