US PATENT SUBCLASS 505 / 850
.~ Protective circuit: (Class 361/19)

Current as of: June, 1999
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505 /   HD   SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS

825  DF  APPARATUS, PER SE, DEVICE, PER SE, OR PROCESS OF MAKING OR OPERATING SAME {36}
850.~ Protective circuit: (Class 361/19)

DEFINITION

Classification: 505/850

Protective circuit: (Class 361/19):

(under subclass 825) Subject matter including means for electrically providing for the safety and protection of an electrical system or device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

872, for a superconductor magnetic field shield which protects an electrical device or circuit from ambient magnetic fields.