US PATENT SUBCLASS 137 / 333
.~.~ Manual rotating means

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

330  DF  NON-VALVING MOTION OF THE VALVE OR VALVE SEAT {1}
331  DF  .~ Rotary motion of a reciprocating valve {2}
333.~.~ Manual rotating means

DEFINITION

Classification: 137/333

(under subclass 331) Apparatus in which a manual actuator is provided for rotating the valve.