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: |