US PATENT SUBCLASS 367 / 115
.~.~.~ Permanent record

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

87  DF  ECHO SYSTEMS {6}
99  DF  .~ Distance or direction finding {5}
107  DF  .~.~ With indicator {9}
115.~.~.~ Permanent record

DEFINITION

Classification: 367/115

Permanent record:

(under subclass 107) Subject matter in which the display device provides a relatively long-lasting display of a transient indication.

(1) Note. Subject matter of this subclass type includes, for example, a moving stylus display device.