US PATENT SUBCLASS 493 / 463
.~ Corrugating

Current as of: June, 1999
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493 /   HD   MANUFACTURING CONTAINER OR TUBE FROM PAPER; OR OTHER MANUFACTURING FROM A SHEET OR WEB

395  DF  BENDING {6}
463.~ Corrugating

DEFINITION

Classification: 493/463

Corrugating:

(under subclass 395) Method or apparatus comprising stressing a sheet or web workpiece beyond its elastic limit to cause it to assume the shape of an undulating series of arcuate waves.