US PATENT SUBCLASS 251 / 150
.~.~ Flexible or expansible

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

142  DF  WITH CORRELATED FLOW PATH {9}
148  DF  .~ Pipe coupling or union {3}
150.~.~ Flexible or expansible

DEFINITION

Classification: 251/150

(under subclass 148) Subject matter wherein the pipe coupling allows adjustable positioning of the valve and coupled conduits.