Pocket Watch Database
Patent Archive
#357310
Patent Information
Instrument Transmit Audible Time Signal
Jacob R. Etter
February 8, 1887
Patent #357310
| Patent Number: | 357310 |
| Description: | Instrument Transmit Audible Time Signal |
| Inventor(s): | Jacob R. Etter |
| Patent Date: | Feb 8, 1887 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
