US PATENT SUBCLASS 264 / 511
.~.~ Including application of vacuum to hold, support, or sustain a preform against which material is molded

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}
510  DF  .~ Producing multilayer work or article {2}
511.~.~ Including application of vacuum to hold, support, or sustain a preform against which material is molded

DEFINITION

Classification: 264/511

Including application of vacuum to hold, support, or sustain a preform against which material is molded:

(under subclass 510) Processes in which a negative pressure differential is used to hold, support, or sustain a preform to which material is molded or cast.