US PATENT SUBCLASS 137 / 151
.~.~ With valve or closure in-flow passage

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

123  DF  SIPHONS {8}
142  DF  .~ With flow starting, stopping or maintaining means {7}
151.~.~ With valve or closure in-flow passage

DEFINITION

Classification: 137/151

(under subclass 142) Apparatus having a flow controlling stopping means which comprises a valve or closure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

131, for float-operated valves in receivers controlling the discharge of siphons.

135, for float-operated valves for inlets to siphons of the level responsive type.