Pocket Watch Database
Patent Archive
#1337097
Patent Information
Clock Spring
Martin G. Stageberg
April 13, 1920
Patent #1337097
| Patent Number: | 1337097 |
| Description: | Clock Spring |
| Inventor(s): | Martin G. Stageberg |
| Patent Date: | Apr 13, 1920 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
