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Rotary Reciprocating Engine.
Patent for a rotary reciprocating engine that is smaller, has more horse-power, and has less friction than previous models.
Date:
May 8, 1900
Creator:
Williams, Win D.
System:
The Portal to Texas History
Tank-Valve.
Patent for a tank valve, which prevents leakage and can be used as a tank or trough valve.
Date:
May 4, 1909
Creator:
Hampton, William M. & Shive, Caleb C.
System:
The Portal to Texas History