Pocket Watch Database
Patent Archive
#425833
Patent Information
Clock Geographical
Alpheus L. Silvernail
April 15, 1890
Patent #425833
| Patent Number: | 425833 |
| Description: | Clock Geographical |
| Inventor(s): | Alpheus L. Silvernail |
| Patent Date: | Apr 15, 1890 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
