mechanical patents

August 24, 2019

Trifari Jewelry Patents: 1949

Costume Jewelry Collectors Presents an original publication by RCJ and Dorothea Stringfield Thanks to Mary Walden-Till for providing most of these patent images, as her hard […]
August 24, 2019

Trifari Jewelry Patents: 1948

Costume Jewelry Collectors Presents an original publication by RCJ and Dorothea Stringfield Thanks to Mary Walden-Till for providing many of these patent images.    Any unattributed […]
August 24, 2019

Trifari Jewelry Patents: 1947

Costume Jewelry Collectors Presents an original publication by RCJ and Dorothea Stringfield Images courtesy of Robin Deutsch.    Additional information or images will be added when […]
August 24, 2019

Trifari Jewelry Patents: 1946

Costume Jewelry Collectors Presents an original publication by RCJ and Dorothea Stringfield Images courtesy of Robin Deutsch.    Additional information or images will be added when […]
August 24, 2019

Trifari Jewelry Patents: 1945

Costume Jewelry Collectors Presents an original publication by RCJ and Dorothea Stringfield Thanks to Mary Walden-Till for providing most of these patent images. Any unattributed images […]
August 24, 2019

Trifari Jewelry Patents: 1944

Costume Jewelry Collectors Presents an original publication by RCJ and Dorothea Stringfield Thanks to Mary Walden-Till for providing many of these patent images.    Any unattributed […]
August 24, 2019

Trifari Jewelry Patents: 1943

Costume Jewelry Collectors Presents an original publication by RCJ and Dorothea Stringfield Thanks to Mary Walden-Till for providing many of these patent images.    Any unattributed […]
August 24, 2019

Trifari Jewelry Patents: 1942

Costume Jewelry Collectors Presents an original publication by RCJ and Dorothea Stringfield   Thanks to Mary Walden-Till for providing many of these patent images. Any unattributed […]
August 24, 2019

Trifari Jewelry Patents: 1941

Costume Jewelry Collectors Presents an original publication by RCJ and Dorothea Stringfield Thanks to Mary Walden-Till for providing many of these patent images.    Any unattributed […]