Pocket Watch Database
Patent Archive
#453927
Patent Information
Watch Balance Adjust Hair Spring
Charles E. Emery
June 9, 1891
Patent #453927
| Patent Number: | 453927 |
| Description: | Watch Balance Adjust Hair Spring |
| Inventor(s): | Charles E. Emery |
| Patent Date: | Jun 9, 1891 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
