US PATENT SUBCLASS 327 / 524
SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

524SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM {22}
525  DF  .~> Fusible link or intentional destruct circuit
526  DF  .~> Redundant
527  DF  .~> Superconductive (e.g., cryogenic, etc.) device {2}
530  DF  .~> With specific source of supply or bias voltage {9}
551  DF  .~> Unwanted signal suppression {1}
560  DF  .~> Nonlinear amplifying circuit {2}
564  DF  .~> Integrated structure {1}
567  DF  .~> Thin film
568  DF  .~> Negative resistance type {4}
574  DF  .~> Utilizing a three or more electrode solid-state device {8}
583  DF  .~> Utilizing two electrode solid-state device {4}
588  DF  .~> With bridge circuit
589  DF  .~> With bootstrap circuit
590  DF  .~> With particular feedback
591  DF  .~> Tube performs plural functions
592  DF  .~> With oscillation prevention
593  DF  .~> With distributed parameter circuit
594  DF  .~> With particular coupling or decoupling
595  DF  .~> With particular connecting
596  DF  .~> Including oscillatory or shock-excited circuit
597  DF  .~> With particular grid control
598  DF  .~> With particular tube structure {2}

DEFINITION

Classification: 327/524

SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM:

(under the class definition) Subject matter wherein a nonlinear device, circuit, or system has a particular

structure, arrangement, or construction that is not classifiable elsewhere.

(1) Note. This subclass and the indented subclasses contain subject matter which is neither sufficiently comprehensive nor possessive of sufficiently significant structure so as to be classified with a specific external area.

SEE OR SEARCH CLASS

313, Electric Lamp and Discharge Devices, appropriate subclasses for the structure of space discharge devices.

315, Electric Lamp and Discharge Devices: Systems,

3+, and 32+ for combined tube and circuit element structure, subclasses 5.18+ and 5.24+ for reflex type beam tube circuits, and subclasses 88+ for automatic space discharge device substitution systems.

330, Amplifiers, 3, for amplifiers with plural diverse amplifying devices, subclasses 4, 5, 43, 45, 47, and 49 wherein the internal tube structure forms part of the amplifier control circuit, subclasses 41, 42, 44+, and 64 for amplifier systems utilizing tubes of particular construction, subclasses 51, 52, 65+, and 127+ for systems that may include tube substitution; subclasses 87+, and the search notes thereto, for cathode follower amplifier systems; and subclasses 127+ for amplifier bias voltage control systems.

331, Oscillators,

5, 6+, 103, 126+, and 184 for oscillator systems utilizing tubes of particular construction; subclass 49 for oscillator substitution systems; subclass 84 for beam tube oscillators of the reflex type; subclasses 79+, 86+, 92+, and 103 wherein the internal tube structure may form part of the oscillator control circuit; and subclass 186 for oscillator bias voltage regulation.

376, Induced Nuclear Reactions: Processes, Systems, and Elements,

100+, for subject matter of this subclass (524) when utilized in connection with plasma in the generation of thermonuclear reactions.