Pocket Watch Database
Patent Archive
#2649684
Patent Information
Hair Spring Assembly
Thomas P. Dolby
August 25, 1953
Patent #2649684
| Patent Number: | 2649684 |
| Description: | Hair Spring Assembly |
| Inventor(s): | Thomas P. Dolby |
| Assignee: | Instrument Springs Mfg Co |
| Patent Date: | Aug 25, 1953 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
