US PATENT SUBCLASS 73 / 642-- .~.~.~.~ Having wave shaping means

US PATENT SUBCLASS 73 / 642
.~.~.~.~ Having wave shaping means

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

570	DF	VIBRATION {10}
584	DF	.~ By mechanical waves {13}
596	DF	.~.~ Beamed {10}
632	DF	.~.~.~ Sonic wave transmitter or receiver transducer {4}
642		.~.~.~.~ Having wave shaping means

DEFINITION

Classification: 73/642

Having wave shaping means:

(under subclass 632) Subject matter wherein means for modifying the shape of the beam is provided, as a sonic wave lens or curved reflector.

SEE OR SEARCH CLASS

181, Acoustics,

175+, for acoustic transducers combined with a sound modifier.

310, Electrical Generator or Motor Structure,

335, for acoustic wave type generator or receiver with lens or reflector.

367, Communications, Electrical: Acoustic Wave Systems and Devices, 140+, for acoustic transducers combined with a lens or reflector respectively.