US PATENT SUBCLASS 455 / 91
TRANSMITTER

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

91TRANSMITTER {22}
92  DF  .~> Remote control of a transmitter
93  DF  .~> Convertible to different type (e.g., AM to FM)
94  DF  .~> Alternator
95  DF  .~> Mobile or portable {5}
101  DF  .~> Diversity
102  DF  .~> Plural modulation
103  DF  .~> Plural separate transmitters or channels {2}
106  DF  .~> Modulation by absorption, shielding, or reflecting
107  DF  .~> With variation of antenna impedance or dimension for modulation
108  DF  .~> Amplitude modulation {1}
110  DF  .~> Angle modulation {3}
114  DF  .~> With harmonic radiation suppression
115  DF  .~> Measuring, testing, or monitoring of transmitter
116  DF  .~> Carrier amplitude control (e.g., voice operated on/off)
117  DF  .~> With electrical protection of transmitter circuit or operator
118  DF  .~> Frequency conversion
119  DF  .~> Carrier frequency stabilization
120  DF  .~> Including tuning {3}
126  DF  .~> With feedback of modulated output signal
127  DF  .~> Power or bias voltage supply
128  DF  .~> With casing or housing
129  DF  .~> With coupled antenna

DEFINITION

Classification: 455/91

TRANSMITTER:

(under the class definition) Subject matter comprising apparatus for generating and modulating a carrier wave and usually including the coupling of the modulated carrier wave to the transmission medium.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1, for an interference signal transmitter.

7+, for a repeater or relay system having a transmitter stage.

26+, for a secret system transmitter.

39+, for systems having a transmitter and a receiver.

88+, for a transceiver. SEE OR SEARCH CLASS

178, Telegraphy,

79+, for telephone transmitters.

219, Electric Heating,

600+, for inductive heating, subclasses 678+ for microwave heating, and subclasses 764+ for capacitive dielectric heating.

250, Radiant Energy, appropriate subclasses for radiant energy transmitters in general.

310, Electrical Generator or Motor Structure, appropriate subclasses for electrical generators.

315, Electric Lamp and Discharge Devices: Systems,

34, for a particular electron discharge tube device in a circuit including an antenna.

322, Electricity: Single Generator Systems, appropriate subclasses for generating electricity.

331, Oscillators, appropriate subclasses.

332, Modulators, appropriate subclasses for modulators, per se. 340, Communications: Electrical,

853.1+, for well bore communications; subclasses 22+ for traffic and vehicle communications; subclasses 825+ for selective (e.g., remote control); and subclasses 870.18+ for telemetering all which may include modulated carrier waves. Also subclass 539 for alarms with a radio link; and subclass 311.1 for paging transmitters.

343, Communications: Radio Wave Antennas,

5+, for reflected or returned wave systems; and subclasses 100+ for antennas which may nominally recite a transmitter.

348, Television,

469+, and 723+ for television transmitters.

375, Pulse or Digital Communications, particularly

295+, for similar transmission of pulse or digital signals.

380, Cryptography, appropriate subclasses for a cryptos:graphic telecommunication system.