Pocket Watch Database
Patent Archive
#2174331
Patent Information
Timer Electric Circuit
John B. Schroeder
September 26, 1939
Patent #2174331
| Patent Number: | 2174331 |
| Description: | Timer Electric Circuit |
| Inventor(s): | John B. Schroeder |
| Assignee: | Silbaugh John W |
| Patent Date: | Sep 26, 1939 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
