US PATENT SUBCLASS 257 / 422
.~.~ With magnetic field directing means (e.g., shield, pole piece, etc.)

Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

414  DF  RESPONSIVE TO NON-ELECTRICAL SIGNAL (E.G., CHEMICAL, STRESS, LIGHT, OR MAGNETIC FIELD SENSORS) {4}
421  DF  .~ Magnetic field {6}
422.~.~ With magnetic field directing means (e.g., shield, pole piece, etc.)

DEFINITION

Classification: 257/422

With magnetic field directing means (e.g., shield, pole piece, etc.):

(under subclass 421) Subject matter wherein means is provided for directing a magnetic field to the active solid-state device.