US PATENT SUBCLASS 505 / 867
.~ Electric power conversion system: (Class 363)

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}
867.~ Electric power conversion system: (Class 363) {1}
868  DF  .~.~> Current conversion: (Class 363/14)

DEFINITION

Classification: 505/867

Electric power conversion system: (Class 363):

(under subclass 825) Subject matter including means to perform a sequence or combination of at least two of the operations of, (a) current conversion, (b) phase conversion, or (c) frequency conversion.