US PATENT SUBCLASS 340 / 614
.~.~.~.~ Pressure

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
603  DF  .~.~ Fluent material {7}
612  DF  .~.~.~ Material level {6}
614.~.~.~.~ Pressure

DEFINITION

Classification: 340/614

Pressure:

(under subclass 612) Subject matter wherein the level is sensed by the pressure exerted by a fluid on a sensor, and includes differential pressure sensed by plural sensors.

SEE OR SEARCH THIS CLASS, SUBCLASS:

626, for pressure monitoring of general utility.

SEE OR SEARCH CLASS

73, Measuring and Testing,

299+, for liquid level measurement by pressure head measurement.