US PATENT SUBCLASS 434 / 6
.~ Sonar

Current as of: June, 1999
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434 /   HD   EDUCATION AND DEMONSTRATION

1  DF  DETECTION OR RANGE DETERMINATION OF DISTANT OBJECT BY APPARATUS USING SENSOR OF ELECTROMAGNETIC OR SOUND ENERGY {2}
6.~ Sonar {4}
7  DF  .~.~> Interference simulation
8  DF  .~.~> Simulation of Doppler shift of echo
9  DF  .~.~> Simulation of plural detector system
10  DF  .~.~> Simulation by use of sound recording

DEFINITION

Classification: 434/6

Sonar:

(under subclass 1) Subject matter relating to teaching or demonstrating the operation or characteristics of sonar.

SEE OR SEARCH CLASS

340, Communications: Electrical,

850+, for underwater systems.

367, Communication, Electrical: Acoustic Wave Systems and Devices,

1, for sonar counter-measure apparatus; and subclasses 87+ for echo systems.