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