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: |