Pocket Watch Database
Patent Archive
#1974695
Patent Information
Spring Of Nickel-iron Alloy Elginium
Reinhard Straumann
September 25, 1934
Patent #1974695
| Manufacturer: | Elgin |
| Patent Number: | 1974695 |
| Description: | Spring Of Nickel-iron Alloy Elginium |
| Inventor(s): | Reinhard Straumann |
| Patent Date: | Sep 25, 1934 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
