US PATENT SUBCLASS 264 / 574
.~.~ To form generally spherical 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}
572  DF  .~ With internal application of fluid pressure {2}
574.~.~ To form generally spherical product

DEFINITION

Classification: 264/574

To form generally spherical product:

(under subclass 572) Processes in which the hollow work or article is generally spherical.