US PATENT SUBCLASS 251 / 5
.~ Fluid pressure actuated

Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

4  DF  TUBE COMPRESSORS {4}
5.~ Fluid pressure actuated

DEFINITION

Classification: 251/5

(under subclass 4) Devices which are actuated by fluid pressure.