Pocket Watch Database
Patent Archive
#309001
Patent Information
Clock Phone & Etc Line Circuit Control Electric
John E. Smith
December 9, 1884
Patent #309001
| Patent Number: | 309001 |
| Description: | Clock Phone & Etc Line Circuit Control Electric |
| Inventor(s): | John E. Smith |
| Assignee: | Gold & Stock Telegraph Co |
| Patent Date: | Dec 9, 1884 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
