Pocket Watch Database
Patent Archive
#3472018
Patent Information
Clock Menstrual
Walter A. Papworth
October 14, 1969
Patent #3472018
| Patent Number: | 3472018 |
| Description: | Clock Menstrual |
| Inventor(s): | Walter A. Papworth |
| Patent Date: | Oct 14, 1969 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
