US PATENT SUBCLASS 348 / 152
.~.~ Intrusion detection

Current as of: June, 1999
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61  DF  SPECIAL APPLICATIONS {15}
143  DF  .~ Observation of or from a specific location (e.g., surveillance) {10}
152.~.~ Intrusion detection {2}
153  DF  .~.~.~> Using plural cameras {1}
155  DF  .~.~.~> Motion detection

DEFINITION

Classification: 348/152

Intrusion detection:

(under subclass 143) Subject matter including a camera for discovering the presence of a person or an object to which entrance is not welcomed.

SEE OR SEARCH CLASS

340, Communications: Electrical,

541+, for systems to detect approach of object or persons.