Pocket Watch Database
Patent Archive
#980288
Patent Information
Timer Electric Circuit
Arthur W. Koiner
January 3, 1911
Patent #980288
| Patent Number: | 980288 |
| Description: | Timer Electric Circuit |
| Inventor(s): | Arthur W. Koiner |
| Patent Date: | Jan 3, 1911 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
