US PATENT SUBCLASS 374 / 119
.~.~ Vibration velocity (e.g., echo timing)

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

100  DF  TEMPERATURE MEASUREMENT (E.G., THERMOMETER) {13}
117  DF  .~ By a vibratory effect (e.g., resonant frequency, acoustical) {2}
119.~.~ Vibration velocity (e.g., echo timing)

DEFINITION

Classification: 374/119

Vibration velocity (e.g., echo timing):

(under subclass 117) Subject matter wherein the temperature is determined by the speed of a mechanical wave.

(1) Note. the resonant frequency of a fixed wavelength element, although inherently a measure of vibration velocity, is classified in subclasses 117 and 118 above, without cross-reference to this subclass in the absence of a

nonresonant variant of velocity determination.