US PATENT SUBCLASS 137 / 874
.~.~.~ Valve or deflector is tubular passageway

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

561 R  DF  SYSTEMS {32}
861  DF  .~ With flow control means for branched passages {8}
872  DF  .~.~ With valve or movable deflector at junction {4}
874.~.~.~ Valve or deflector is tubular passageway

DEFINITION

Classification: 137/874

Valve or deflector is tubular passageway:

(under subclass 872) System in which the fluent material flow control means or diverting means comprises, at least in part, a movable tubular switching passageway.