Pocket Watch Database
Patent Archive
#139154
Patent Information
Time Stamp Automatic
J.C. Hinchman,
May 20, 1873
Patent #139154
| Patent Number: | 139154 |
| Description: | Time Stamp Automatic |
| Inventor(s): | J.C. Hinchman, |
| Patent Date: | May 20, 1873 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
