Mechanical and Utility Jewelry Patents 1911-1929

Costume Jewelry Collectors
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.

  • 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