Pocket Watch Database
Patent Archive
#106718
Patent Information
Heliade Solar Time Instrument
Francois Martin Pannetrat
August 23, 1870
Patent #106718
Patent Number: | 106718 |
Description: | Heliade Solar Time Instrument |
Inventor(s): | Francois Martin Pannetrat |
Patent Date: | Aug 23, 1870 |
Registration Type: | Patent |
External Research: | https://www.google.c… |
Patent Document: |