Pocket Watch Database
Patent Archive
#1311502
Patent Information
Hair Spring Adjust
Frederic Ecaubert
July 29, 1919
Patent #1311502
| Patent Number: | 1311502 |
| Description: | Hair Spring Adjust |
| Inventor(s): | Frederic Ecaubert |
| Patent Date: | Jul 29, 1919 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
