Pocket Watch Database
Patent Archive
#920051
Patent Information
Tool Watch Crystal Gage
Antonin Guerineau
April 27, 1909
Patent #920051
| Patent Number: | 920051 |
| Description: | Tool Watch Crystal Gage |
| Inventor(s): | Antonin Guerineau |
| Patent Date: | Apr 27, 1909 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
