Pocket Watch Database
Patent Archive
#870900
Patent Information
Timer Electric Circuit
Carl A. Palmgren
Arthur H. Young
November 12, 1907
Patent #870900
| Patent Number: | 870900 |
| Description: | Timer Electric Circuit |
| Inventor(s): |
Carl A. Palmgren Arthur H. Young |
| Patent Date: | Nov 12, 1907 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
