Pocket Watch Database
Patent Archive
#485639
Patent Information
Time Stamp
William Henry Martin
November 8, 1892
Patent #485639
| Patent Number: | 485639 |
| Description: | Time Stamp |
| Inventor(s): | William Henry Martin |
| Assignee: | Accurate Time Stsmp Co |
| Patent Date: | Nov 8, 1892 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
