Pocket Watch Database
Patent Archive
#1848520
Patent Information
Machine Hair Spring Check
William Barton Eddison
March 8, 1932
Patent #1848520
| Patent Number: | 1848520 |
| Description: | Machine Hair Spring Check |
| Inventor(s): | William Barton Eddison |
| Assignee: | Western Clock Co |
| Patent Date: | Mar 8, 1932 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
