Access
Collection
Counties
Decade
Day
Language
1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Automatic Switch Throwing Apparatus
Patent for a device that will automatically throw a switch upon the presence of an on-coming train, and switch it back after the train has passed.
Date:
December 5, 1916
Creator:
Bida, Frank
System:
The Portal to Texas History