Pocket Watch Database
Patent Archive
#1311501
Patent Information
Hair Spring And Balance Mount
Frederic Ecaubert
July 29, 1919
Patent #1311501
| Patent Number: | 1311501 |
| Description: | Hair Spring And Balance Mount |
| Inventor(s): | Frederic Ecaubert |
| Patent Date: | Jul 29, 1919 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
