Pocket Watch Database
Patent Archive
#476748
Patent Information
Watch Case Spring
Thomas C. Nixon
John E. Ketchem
June 7, 1892
Patent #476748
| Patent Number: | 476748 |
| Description: | Watch Case Spring |
| Inventor(s): |
Thomas C. Nixon John E. Ketchem |
| Patent Date: | Jun 7, 1892 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
