US PATENT SUBCLASS 264 / 563
.~.~ Producing a tubular product

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}
555  DF  .~ Production of continuous or running length {3}
563.~.~ Producing a tubular product {1}
564  DF  .~.~.~> Including deformation by application of fluid pressure {2}

DEFINITION

Classification: 264/563

Producing a tubular product:

(under subclass 555) Processes in which the continuous or running length product formed is hollow.

(1) Note. This subclass provides for supporting or sustaining a tubular article.