Vintage Jewelry Patents

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

Want to know the difference in a patent, a copyright or trademark?    Visit the US Patent Website!

Also, visit Jewelry Patents, a large patent resource   Jewelry Patents

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.

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jewelry patents for Trifari
Trifari Jewelry Patents
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by Dorothea Stringfield