US PATENT SUBCLASS 137 / 444
.~.~.~.~ Vertical inlet riser

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

386  DF  LIQUID LEVEL RESPONSIVE OR MAINTAINING SYSTEMS {11}
409  DF  .~ By float controlled valve {11}
434  DF  .~.~ Float arm operated valve {14}
442  DF  .~.~.~ Assembly mounted on and having reciprocating valve element co axial with inlet pipe {2}
444.~.~.~.~ Vertical inlet riser

DEFINITION

Classification: 137/444

(under subclass 442) Apparatus in which the inlet pipe is vertical and enters the tank holding the liquid accumulation from the bottom thereof.