US PATENT SUBCLASS 264 / 545
.~.~ Including uniting plural shaped sheets to form hollow work

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}
544  DF  .~ Starting material is nonhollow planar finite length preform or product is finite length {6}
545.~.~ Including uniting plural shaped sheets to form hollow work

DEFINITION

Classification: 264/545

Including uniting plural shaped sheets to form hollow work:

(under subclass 544) Processes in which two or more sheets are combined and shaped to form a hollow article.