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: |
