US PATENT SUBCLASS 137 / 493.8
.~.~ Axes of ports parallel

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

455  DF  LINE CONDITION CHANGE RESPONSIVE VALVES {11}
493  DF  .~ Bi-directional flow valves {4}
493.8.~.~ Axes of ports parallel

DEFINITION

Classification: 137/493.8

(under subclass 493) Apparatus wherein the axis of one valve port is parallel to the axis of the second valve port. See the definition of valve port under subclass 493.7.