Pocket Watch Database
Patent Archive
#992537
Patent Information
Timer Gas Cock
Efraim Barber
May 16, 1911
Patent #992537
| Patent Number: | 992537 |
| Description: | Timer Gas Cock |
| Inventor(s): | Efraim Barber |
| Patent Date: | May 16, 1911 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
