US PATENT SUBCLASS 137 / 181
.~.~.~.~ Manual control

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

154  DF  DIVERSE FLUID CONTAINING PRESSURE SYSTEMS {7}
171  DF  .~ Fluid separating traps or vents {5}
177  DF  .~.~ Discriminating outlet for liquid {4}
179  DF  .~.~.~ With non-discriminating gas vent or liquid discharge {2}
181.~.~.~.~ Manual control

DEFINITION

Classification: 137/181

(under subclass 179) Separating traps wherein the nondiscriminating fluid discharge is manually controlled.

(1) Note. See the class definition, Lines With Other Classes and Within This Class, (3) Manual Control, Resetting, etc., and also Subclass References to the Current Class, for search notes on manual valve actuation in this and related classes.