US PATENT SUBCLASS 340 / 566
.~.~.~.~ Vibration

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
541  DF  .~.~ Intrusion detection {8}
565  DF  .~.~.~ Responsive to intruder energy {2}
566.~.~.~.~ Vibration

DEFINITION

Classification: 340/566

Vibration:

(under subclass 565) Subject matter responsive to mechanical disturbance.

SEE OR SEARCH CLASS

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

136, for intruder responsive acoustic wave systems.