US PATENT SUBCLASS 367 / 909
COLLISION AVOIDANCE

Current as of: June, 1999
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367 /   HD   COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

909COLLISION AVOIDANCE

DEFINITION

Classification: 367/909

COLLISION AVOIDANCE:

Acoustic wave echo systems or distance or direction finding systems for providing advance warning or impending impact of relatively moving objects.