Pocket Watch Database
Patent Archive
#172827
Patent Information
Watch Case Spring
Isaac Newton Hopkins
February 1, 1876
Patent #172827
| Patent Number: | 172827 |
| Description: | Watch Case Spring |
| Inventor(s): | Isaac Newton Hopkins |
| Assignee: | Preston H W |
| Patent Date: | Feb 1, 1876 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
