Pocket Watch Database
Patent Archive
#230214
Patent Information
Watch Crystal
Charles F. Allen
July 20, 1880
Patent #230214
| Patent Number: | 230214 |
| Description: | Watch Crystal |
| Inventor(s): | Charles F. Allen |
| Patent Date: | Jul 20, 1880 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
