US PATENT SUBCLASS 340 / 541
.~.~ Intrusion detection

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
541.~.~ Intrusion detection {8}
542  DF  .~.~.~> Lock {1}
544  DF  .~.~.~> Disturbance of fluid pressure
545.1  DF  .~.~.~> Door or window movement {6}
550  DF  .~.~.~> Partition penetration
551  DF  .~.~.~> Disturbance of magnetic field
552  DF  .~.~.~> Disturbance of electromagnetic waves {3}
561  DF  .~.~.~> Disturbance of electric field {1}
565  DF  .~.~.~> Responsive to intruder energy {2}

DEFINITION

Classification: 340/541

Intrusion detection:

(under subclass 540) Subject matter where the entry or attempted entry by a living being (intruder) into a protected area is detected.

SEE OR SEARCH CLASS

43, Fishing, Trapping, and Vermin Destroying,

59, for burglar traps.

109, Safes, Bank Protection, or a Related Device,

21, 31, and 38 for alarms, signals, or indicators.

116, Signals and Indicators,

75+, for mechanical burglar alarms. 182, Fire Escape, Ladder, or Scaffold,

18, with indicator, signal, or alarm.

200, Electricity: Circuit Makers and Breakers,

61.93, for anti-intrusion type switch.