Pocket Watch Database
Patent Archive
#992631
Patent Information
Timer Electric Circuit
Walter P. Allen
May 16, 1911
Patent #992631
| Patent Number: | 992631 |
| Description: | Timer Electric Circuit |
| Inventor(s): | Walter P. Allen |
| Patent Date: | May 16, 1911 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
