Pocket Watch Database
Patent Archive
#2158725
Patent Information
Apparatus And Method Test Hair Spring And Like
Robert R. Lawson
Frank D. Urie
June 16, 1939
Patent #2158725
| Manufacturer: | Elgin |
| Patent Number: | 2158725 |
| Description: | Apparatus And Method Test Hair Spring And Like |
| Inventor(s): |
Robert R. Lawson Frank D. Urie |
| Assignee: | Elgin Natl Watch Co |
| Patent Date: | Jun 16, 1939 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
