US PATENT SUBCLASS 264 / 634
.~.~ Shaping by extrusion (e.g., spinning, etc.)

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}
632  DF  .~ Producing hollow article (e.g., tube, etc.) {4}
634.~.~ Shaping by extrusion (e.g., spinning, etc.)

DEFINITION

Classification: 264/634

Shaping by Extrusion (e.g., spinning, etc.):

(under subclass 632) Process wherein an article is formed by forcing a supply of article forming material through a confining and shaping orifice.

SEE OR SEARCH THIS CLASS, SUBCLASS:

638, for shaping nonhollow bodies by extrusion (e.g., spinning, etc.).