Mechanical and Utility Jewelry Patents 1911-1929

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.

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