US PATENT SUBCLASS 324 / 244
.~ Magnetometers

Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

200  DF  MAGNETIC {24}
244.~ Magnetometers {14}
244.1  DF  .~.~> Optical
245  DF  .~.~> Plural sensor axis misalignment correction
246  DF  .~.~> With means to align field sensor with magnetic field sensed
247  DF  .~.~> Nonparallel plural magnetic sensors
248  DF  .~.~> Superconductive magnetometers
249  DF  .~.~> Thin film magnetometers
250  DF  .~.~> Electronic tube or microwave magnetometers
251  DF  .~.~> Hall plate magnetometers
252  DF  .~.~> Semiconductor type solid-state or magnetoresistive magnetometers
253  DF  .~.~> Saturable core magnetometers {2}
256  DF  .~.~> Energized movable sensing coil magnetometers
257  DF  .~.~> Moving coil magnetometer
258  DF  .~.~> Fixed coil magnetometer
259  DF  .~.~> Movable magnet or magnetic member interacts with magnetic field

DEFINITION

Classification: 324/244

Magnetometers:

(under subclass 200) Subject matter wherein the apparatus to sense and indicate the sensing of a magnetic field is responsive to the intensity of the sensed magnetic field or the direction of the sensed magnetic field.

(1) Note. Subject matter classifiable in this subclass includes subcombinations or perfecting features peculiar to magnetometers and not classifiable elsewhere such as field compensating means for magnetometers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

227, plural magnetic tests of a magnetic field.

228+, for the testing of material by magnetic fields which use magnetometers for the defection of the material-modified magnetic field.

SEE OR SEARCH CLASS

33, Geometrical Instruments, 300+, for compasses, particularly subclasses 356+ for magnetic field responsive error compensation.

174, Electricity: Conductors and Insulators,

32+, for anti-inductive structures, particularly subclass 35 for shielded coils.

307, Electrical Transmission or Interconnection Systems,

89, for systems to prevent induction having means to control a magnetic field, and subclass 101 for residual or remnant magnetism control.

361, Electricity: Electrical Systems and Devices,

93.6, for abnormal current condition protection including transformer sensor.