US PATENT SUBCLASS 137 / 625.17
.~.~ Selective reciprocation or rotation

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

561 R  DF  SYSTEMS {32}
625  DF  .~ Multi-way valve unit {12}
625.17.~.~ Selective reciprocation or rotation

DEFINITION

Classification: 137/625.17

(under subclass 625) Devices in which control of flow passages may be obtained by reciprocation or rotation of the valve.