Pocket Watch Database
Patent Archive
#33990
Patent Information
Clock Escape
William Hart
December 24, 1861
Patent #33990
| Patent Number: | 33990 |
| Description: | Clock Escape |
| Inventor(s): | William Hart |
| Patent Date: | Dec 24, 1861 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
