Pocket Watch Database
Patent Archive
#890403
Patent Information
Timer Electric Circuit
Richard B. Brauer
June 9, 1908
Patent #890403
| Patent Number: | 890403 |
| Description: | Timer Electric Circuit |
| Inventor(s): | Richard B. Brauer |
| Patent Date: | Jun 9, 1908 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
