Pocket Watch Database
Patent Archive
#991240
Patent Information
Time Stamp
Frederick Purdy
May 2, 1911
Patent #991240
| Patent Number: | 991240 |
| Description: | Time Stamp |
| Inventor(s): | Frederick Purdy |
| Patent Date: | May 2, 1911 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
