Country
Counties
Year
1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Safety Device for Railways.
Patent for a safety device for railways that stops trains if they enter a danger zone, which indicates that the train is to close to another train.
Date:
October 3, 1911
Creator:
Mitchell, Charles B.
System:
The Portal to Texas History