US PATENT SUBCLASS 264 / 508
.~.~.~ Continuous or indefinite length

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}
505  DF  .~ Corrugating {1}
506  DF  .~.~ Of a tubular preform {2}
508.~.~.~ Continuous or indefinite length

DEFINITION

Classification: 264/508

Continuous or indefinite length:

(under subclass 506) Processes in which continuous or indefinite length work is corrugated.