Pocket Watch Database
Patent Archive
#1673380
Patent Information
Timer Electric Circuit
William T. Trenwith
June 12, 1928
Patent #1673380
| Patent Number: | 1673380 |
| Description: | Timer Electric Circuit |
| Inventor(s): | William T. Trenwith |
| Assignee: | Engelhardt William R |
| Patent Date: | Jun 12, 1928 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
