US PATENT SUBCLASS 340 / 545.9
.~.~.~.~ Plural doors or windows

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}
545.1  DF  .~.~.~ Door or window movement {6}
545.9.~.~.~.~ Plural doors or windows

DEFINITION

Classification: 340/545.9

Plural doors or windows:

(under subclass 545.1) Subject matter responsive to the movement of any door or window of a plurality of doors or windows.