US PATENT SUBCLASS 505 / 851
.~ Control circuit for electromagnetic device: (Class 361/141)

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}
851.~ Control circuit for electromagnetic device: (Class 361/141)

DEFINITION

Classification: 505/851

Control circuit for electromagnetic device: (Class 361/141):

(under subclass 825) Subject matter comprising a circuit for the control of a relay or other electromagnetic device.