US PATENT SUBCLASS 137 / 407
.~.~.~ Top and bottom connections

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

386  DF  LIQUID LEVEL RESPONSIVE OR MAINTAINING SYSTEMS {11}
403  DF  .~ By weight of accumulated fluid {4}
406  DF  .~.~ In communicating measuring vessel {1}
407.~.~.~ Top and bottom connections

DEFINITION

Classification: 137/407

(under subclass 406) Apparatus in which the separate measuring vessel is provided with connections with the liquid accumulation at both the top and bottom of the measuring vessel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

563+, for distribution systems of the closed circulation type.