US PATENT SUBCLASS 505 / 823
.~.~ Powder metallurgy: (Class 419)

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}
815  DF  .~ Process of making, per se {5}
823.~.~ Powder metallurgy: (Class 419)

DEFINITION

Classification: 505/823

Powder metallurgy: (Class 419):

(under subclass 815) Subject matter involving the production of metal, or metal containing product, from powder(s) by a sintering or like operation.