Pocket Watch Database
Patent Archive
#996616
Patent Information
Timer Electric Circuit
James Mack Chappel
July 4, 1911
Patent #996616
| Patent Number: | 996616 |
| Description: | Timer Electric Circuit |
| Inventor(s): | James Mack Chappel |
| Patent Date: | Jul 4, 1911 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
