US PATENT SUBCLASS 340 / 505
.~.~ Interrogator-responder


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

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
501  DF  .~ With particular system function (e.g., temperature compensation, calibration) {8}
505.~.~ Interrogator-responder


DEFINITION

Classification: 340/505

Interrogator-responder:

(under subclass 501) Subject matter where the indication is only given upon receipt of an initiating signal.

(1) Note. The response signal may be indicative of the original interrogating signal and any intervening disturbances. However, the condition is indicated only in response to the interrogation. See subclass 502 for acknowledgement systems, and the Note thereunder for the distinction between interrogation and acknowledgement systems.