US PATENT SUBCLASS 251 / 364
.~.~ Head engaging gasket

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

356  DF  VALVE {5}
359  DF  .~ Seats {3}
364.~.~ Head engaging gasket

DEFINITION

Classification: 251/364

(under subclass 359) Subject matter provided with a sealing member of resilient material which engages the head and constitutes the sole valving surface of the seat.