Pocket Watch Database
Patent Archive
#504223
Patent Information
Timepiece Escape
John Henry Langhorst
August 29, 1893
Patent #504223
| Patent Number: | 504223 |
| Description: | Timepiece Escape |
| Inventor(s): | John Henry Langhorst |
| Patent Date: | Aug 29, 1893 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
