US PATENT SUBCLASS 455 / 67.1
.~ With measuring, testing, or monitoring of system or part

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

Internet Version by PATENTEC © 1999      Terms of Use


455 /   HD   TELECOMMUNICATIONS

39  DF  TRANSMITTER AND RECEIVER AT SEPARATE STATIONS {14}
67.1.~ With measuring, testing, or monitoring of system or part {6}
67.2  DF  .~.~> Using a chamber (e.g., room testing or audio surveillance, etc.)
67.3  DF  .~.~> Noise, distortion or unwanted signal detection (e.g., quality control, etc.)
67.4  DF  .~.~> Using a test signal
67.5  DF  .~.~> Of a microwave link or system
67.6  DF  .~.~> Phase measuring (e.g., group delay, propagation effects, etc.)
67.7  DF  .~.~> With indication (e.g., visual or voice signalling, etc.)

DEFINITION

Classification: 455/67.1

With measuring, testing, or monitoring of system or part:

(under subclass 39) Subject matter which relates to means intended solely for the purpose of and adapted to (a) adjust the frequency setting of a carrier wave generation means or determine the output frequency or some other characteristics of a transmitter means; (b) adjust the frequency setting of a local oscillator, a tuning means or other stages of a receiver means in accordance with a standard frequency; (c) compare the frequency of a resonant input or output circuit of a receiver or transmitter with a standard frequency for the purpose of setting a tuning position indicator or dial to correspond to maximum transmitter or receiver output at the standard frequency; and (d) determine the operating characteristics of the whole or selected components of the system under prescribed conditions of operation and not elsewhere classified.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9, for repeaters with monitoring.

SEE OR SEARCH CLASS

375, Pulse or Digital Communications,

224+, for pulse modulated carrier systems with testing.