US PATENT SUBCLASS 251 / 346
.~ Plural motions of valve

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

341  DF  VALVE ACTUATOR IS VALVE CASING OR EXTENSION THEREOF {5}
346.~ Plural motions of valve

DEFINITION

Classification: 251/346

(under subclass 341) Devices in which movement of the valve casing produces plural motions of the valve which may be simultaneous or sequential.