Pocket Watch Database
Patent Archive
#2388537
Patent Information
Method Of Making Spring
Raymond E. Tibbetts
Charles A. Hallstrom
November 6, 1945
Patent #2388537
| Patent Number: | 2388537 |
| Description: | Method Of Making Spring |
| Inventor(s): |
Raymond E. Tibbetts Charles A. Hallstrom |
| Assignee: | American Steel & Wire Co |
| Patent Date: | Nov 6, 1945 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
