US PATENT SUBCLASS 340 / 691.4
.~.~ Plural


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

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
691.1  DF  .~ Specified indicator structure {7}
691.4.~.~ Plural {1}
691.5  DF  .~.~.~> Diverse


DEFINITION

Classification: 340/691.4

Plural:

(under subclass 691.1) Subject matter where the system provides more than one humanly perceptible indication in response to a single condition.

(1) Note. For example, multiple alarms in different rooms of a dwelling, each responsive to events such as intrusion or fire being sensed at any point in the dwelling.

SEE OR SEARCH THIS CLASS, SUBCLASS:

326+, for a generic indicating system having plural concurrent single indications.

691.3, for a condition responsive indicating with multiple discrete human perceptible signals generated in different stages or levels.