Pocket Watch Database
Patent Archive
#1881756
Patent Information
Main Spring Tester
Edward Franklin Long
October 11, 1932
Patent #1881756
| Patent Number: | 1881756 |
| Description: | Main Spring Tester |
| Inventor(s): | Edward Franklin Long |
| Patent Date: | Oct 11, 1932 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
