US PATENT SUBCLASS 137 / 477
.~.~.~.~ On movable valve part

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

455  DF  LINE CONDITION CHANGE RESPONSIVE VALVES {11}
469  DF  .~ Pop valves {5}
475  DF  .~.~ Adjustable choke {1}
476  DF  .~.~.~ Annular lip or baffle {2}
477.~.~.~.~ On movable valve part

DEFINITION

Classification: 137/477

(under subclass 476) Valves in which the annular adjustable lip is on a movable valve part.