Pocket Watch Database
Patent Archive
#470309
Patent Information
Clock Geographical
Alpheus L. Silvernail
March 8, 1892
Patent #470309
| Patent Number: | 470309 |
| Description: | Clock Geographical |
| Inventor(s): | Alpheus L. Silvernail |
| Patent Date: | Mar 8, 1892 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
