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Pump.
Patent for an improved pump valve designed for a pump for pumping oil from oil wells "which will not be affected by the fluid or gas pressure in the bore" (lines 17-18).
Date:
September 30, 1919
Creator:
Graf, Sydney H.
System:
The Portal to Texas History
Apparatus for Checking Runaway Horses.
Patent for a new and useful apparatus for checking runaway horses, including instructions and illustrations.
Date:
August 30, 1898
Creator:
Singleton, James M.
System:
The Portal to Texas History