Counties
1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Aerocompass.
Patent for an aerocompass, which improves upon a compass combined with inclinometers or map-boards. It is intended for use on submarines, airplanes, or in an area when it would be difficult to use a regular compass.
Date:
January 8, 1918
Creator:
Fischer, Fred Charlie.
System:
The Portal to Texas History