Pocket Watch Database
Patent Archive
#704236
Patent Information
Watch Safety
Frank A. Chervenka
July 8, 1902
Patent #704236
| Patent Number: | 704236 |
| Description: | Watch Safety |
| Inventor(s): | Frank A. Chervenka |
| Patent Date: | Jul 8, 1902 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
