US PATENT SUBCLASS 251 / 282
.~ Reciprocating


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

281  DF  BALANCED VALVES {2}
282.~ Reciprocating


DEFINITION

Classification: 251/282

(under subclass 281) Valves wherein the valve has a linear motion to and from flow obstructing position.