US PATENT SUBCLASS 264 / 571
.~ Including use of vacuum

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

500  DF  DIRECT APPLICATION OF FLUID PRESSURE DIFFERENTIAL TO PERMANENTLY SHAPE, DISTORT, OR SUSTAIN WORK {14}
571.~ Including use of vacuum

DEFINITION

Classification: 264/571

Including use of vacuum:

(under subclass 500) Processes in which the work is subjected to a pressure less than atmospheric.