Pocket Watch Database
Patent Archive
#227923
Patent Information
Watch Glass
John H. Purdy
May 25, 1880
Patent #227923
| Patent Number: | 227923 |
| Description: | Watch Glass |
| Inventor(s): | John H. Purdy |
| Patent Date: | May 25, 1880 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
