US PATENT SUBCLASS 137 / 596.1
.~.~ Biased exhaust valve

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

561 R  DF  SYSTEMS {32}
596  DF  .~ Supply and exhaust {4}
596.1.~.~ Biased exhaust valve {1}
596.2  DF  .~.~.~> Biased closed

DEFINITION

Classification: 137/596.1

(under subclass 596) Devices in which the exhaust valve is biased toward one of its positions.