Pocket Watch Database
Patent Archive
#470272
Patent Information
Time Valve Mech
Henri Vignere
March 8, 1892
Patent #470272
| Patent Number: | 470272 |
| Description: | Time Valve Mech |
| Inventor(s): | Henri Vignere |
| Patent Date: | Mar 8, 1892 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
