Pocket Watch Database
Patent Archive
#1283705
Patent Information
Collet For Hair Spring
Frederic Ecaubert
November 5, 1918
Patent #1283705
| Patent Number: | 1283705 |
| Description: | Collet For Hair Spring |
| Inventor(s): | Frederic Ecaubert |
| Patent Date: | Nov 5, 1918 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
