US PATENT SUBCLASS 73 / 35.12
.~.~ Pressure

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

35.01  DF  ENGINE DETONATION (E.G., KNOCK) {4}
35.07  DF  .~ Specific type of detonation sensor {3}
35.12.~.~ Pressure {1}
35.13  DF  .~.~.~> Piezoelectric

DEFINITION

Classification: 73/35.12

Pressure:

(under subclass 35.07) Subject matter wherein the sensing means detects a rapid fluctuation in pressure caused by detonation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

115, for measuring pressure in an engine.

700+, for a fluid pressure gage, per se.