Pocket Watch Database
Patent Archive
#421925
Patent Information
Tool Tweezer Hair Spring
Jerome R. Graves
February 25, 1890
Patent #421925
| Patent Number: | 421925 |
| Description: | Tool Tweezer Hair Spring |
| Inventor(s): | Jerome R. Graves |
| Patent Date: | Feb 25, 1890 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
