United Jewelry Show Catalog 1956
August 24, 2019Mechanical and Utility Jewelry Patents 1930-1939
August 24, 2019
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 |
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Original RCJ publications pages created and or authored
by Dorothea Stringfield