utility jewelry patents

August 24, 2019

Mechanical and Utility Jewelry Patents 1961-1971

Jewelry Patents 1961 – 1971 Dotty’s friend Mary Walden-Till of the UK is responsible for these pages of utility patents. Her dedication in searching the US []
August 24, 2019

Mechanical and Utility Jewelry Patents 1940-1959

August 24, 2019

Mechanical and Utility Jewelry Patents 1930-1939

Costume Jewelry Collectors Presents an original publication by RCJ and Dorothea Stringfield   Jewelry Patents 1930 – 1939   Dotty’s friend Mary Walden-Till of the UK []
August 24, 2019

Mechanical and Utility Jewelry Patents 1911-1929