Pocket Watch Database
Patent Archive
#491692
Patent Information
Time Circuit Closer
Robert H. Twigg
February 14, 1893
Patent #491692
| Patent Number: | 491692 |
| Description: | Time Circuit Closer |
| Inventor(s): | Robert H. Twigg |
| Patent Date: | Feb 14, 1893 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
