Pocket Watch Database
Patent Archive
#1881389
Patent Information
Operation Time Indicator For Triple Valve
James R. Ricketts
October 4, 1932
Patent #1881389
| Patent Number: | 1881389 |
| Description: | Operation Time Indicator For Triple Valve |
| Inventor(s): | James R. Ricketts |
| Patent Date: | Oct 4, 1932 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
