Pocket Watch Database
Patent Archive
#401033
Patent Information
Time Stamp
Benjamin B. Hill
April 9, 1889
Patent #401033
| Patent Number: | 401033 |
| Description: | Time Stamp |
| Inventor(s): | Benjamin B. Hill |
| Patent Date: | Apr 9, 1889 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
