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Pump System.
Patent for a pump system with an improved air compressor for use in cars that produces a very quiet engine.
Date:
July 25, 1911
Creator:
Read, William K.
System:
The Portal to Texas History
Cross-Tie.
Patent for a railroad cross tie made of concrete and metal, which can be attached without spikes or bolts.
Date:
October 24, 1911
Creator:
Whaley, Albert L.
System:
The Portal to Texas History