Pocket Watch Database
Patent Archive
#1136950
Patent Information
Watch Hair Spring Collet
Jacob Freistadter
April 27, 1915
Patent #1136950
| Patent Number: | 1136950 |
| Description: | Watch Hair Spring Collet |
| Inventor(s): | Jacob Freistadter |
| Patent Date: | Apr 27, 1915 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
