US PATENT SUBCLASS 505 / 809
.~.~ Ceramic: (Class 501)

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

800  DF  MATERIAL, PER SE, PROCESS OF MAKING SAME {4}
801  DF  .~ Composition: (Classes 75, 252, 501) {7}
809.~.~ Ceramic: (Class 501)

DEFINITION

Classification: 505/809

Ceramic: (Class 501):

(under subclass 801) Subject matter in the form of ceramic matter.