Pocket Watch Database
Patent Archive
#640613
Patent Information
Tool Watch Hair Spring & Collet
Charles Bassett
January 2, 1900
Patent #640613
Patent Number: | 640613 |
Description: | Tool Watch Hair Spring & Collet |
Inventor(s): | Charles Bassett |
Patent Date: | Jan 2, 1900 |
Registration Type: | Patent |
External Research: | https://www.google.c… |
Patent Document: |