Pocket Watch Database
Patent Archive
#234538
Patent Information
Indicate Time By Gas Pressure
G. G. Wagner
November 9, 1880
Patent #234538
| Patent Number: | 234538 |
| Description: | Indicate Time By Gas Pressure |
| Inventor(s): | G. G. Wagner |
| Patent Date: | Nov 9, 1880 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
