Pocket Watch Database
Patent Archive
#424273
Patent Information
Electric Time Dial
Charles A. Colby
James C. Strong
March 25, 1890
Patent #424273
| Patent Number: | 424273 |
| Description: | Electric Time Dial |
| Inventor(s): |
Charles A. Colby James C. Strong |
| Patent Date: | Mar 25, 1890 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
