Pocket Watch Database
Patent Archive
#421623
Patent Information
Time Stamp
Charles H. Shaw
February 18, 1890
Patent #421623
| Patent Number: | 421623 |
| Description: | Time Stamp |
| Inventor(s): | Charles H. Shaw |
| Patent Date: | Feb 18, 1890 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
