Pocket Watch Database
Patent Archive
#131347
Patent Information
Improvement In Registering Steam-gages
Thomas C. Hargrave
September 17, 1872
Patent #131347
| Patent Number: | 131347 |
| Description: | Improvement In Registering Steam-gages |
| Inventor(s): | Thomas C. Hargrave |
| Patent Date: | Sep 17, 1872 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
