3 Matching Results
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Railway Switch.
Patent for a railway switch to be operated by foot and without structural change to existing construction.
Date:
February 28, 1922
Creator:
Arteaga, Ignacio
System:
The Portal to Texas History
Safety Apparatus.
Patent for vehicle to safely have the right of way when reaching a crossing first.
Date:
February 14, 1922
Creator:
Duran, Arturo
System:
The Portal to Texas History
Can Opener
Patent for a can opener which cuts cleanly and rapidly around the outside wall of the can, so as to avoid jagged edges.
Date:
February 14, 1922
Creator:
Minor, Robert B.
System:
The Portal to Texas History