US PATENT SUBCLASS 340 / 501
.~ With particular system function (e.g., temperature compensation, calibration)

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

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
501.~ With particular system function (e.g., temperature compensation, calibration) {8}
502  DF  .~.~> Acknowledgement {1}
504  DF  .~.~> Answer-back
505  DF  .~.~> Interrogator-responder
506  DF  .~.~> Alarm system supervision {7}
514  DF  .~.~> Testing {2}
517  DF  .~.~> Selection from a plurality of sensed conditions {6}
526  DF  .~.~> Predetermined rate of occurrence
527  DF  .~.~> Time delay {2}

DEFINITION

Classification: 340/501

With particular system function (e.g., temperature compensation, calibration):

(under subclass 500) Subject matter with significant functional relationship between the condition sensing means and indicating means, additional to the basic condition responsive actuating function.

(1) Note. Typical additional functions are special processes, priority of urgency, adjustment, temperature compensation, and calibration.

SEE OR SEARCH CLASS

73, Measuring and Testing,

1.01+, for calibration of a measuring device.

374, Thermal Measuring and Testing,

1+, for calibration of a thermally responsive device.