US PATENT SUBCLASS 264 / 675
.~.~ Containing water vapor

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

603  DF  OUTSIDE OF MOLD SINTERING OR VITRIFYING OF SHAPED INORGANIC ARTICLE OR PREFORM {30}
674  DF  .~ Involving specified composition of heating atmosphere, other than air {2}
675.~.~ Containing water vapor

DEFINITION

Classification: 264/675

Containing water vapor:

(under subclass 674) Process wherein the gaseous composition contains water vapor, excluding that water vapor which would be naturally present in air.