US PATENT SUBCLASS 429 / 90
WITH MEASURING, TESTING, OR INDICATING MEANS

Current as of: June, 1999
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429 /   HD   CHEMISTRY: ELECTRICAL CURRENT PRODUCING APPARATUS, PRODUCT, AND PROCESS

90WITH MEASURING, TESTING, OR INDICATING MEANS {1}
91  DF  .~> For charge or liquid level {1}

DEFINITION

Classification: 429/90

(under the class definition) Apparatus having means to measure, test or indicate a condition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53+, for pressure release control.

61+, for control means responsive to a condition sensor.

SEE OR SEARCH CLASS

73, Measuring and Testing, appropriate subclasses for process or apparatus for making a measurement or test.

116, Signals and Indicators, appropriate subclasses for signalling and indicating devices, per se. 324, Electricity: Measuring and Testing, appropriate subclasses for apparatus for measuring and testing electrical properties.