Pocket Watch Database
Patent Archive
#300491
Patent Information
Clock Speed Indicator
William H. Lord
June 17, 1884
Patent #300491
| Patent Number: | 300491 |
| Description: | Clock Speed Indicator |
| Inventor(s): | William H. Lord |
| Patent Date: | Jun 17, 1884 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
