Pocket Watch Database
Patent Archive
#2236907
Patent Information
Hair Spring Bending Apparatus
Walter Hoffsommer
April 1, 1941
Patent #2236907
| Patent Number: | 2236907 |
| Description: | Hair Spring Bending Apparatus |
| Inventor(s): | Walter Hoffsommer |
| Patent Date: | Apr 1, 1941 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
