US PATENT SUBCLASS 242 / 525.4
.~.~.~ Perforating

Current as of: June, 1999
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242 /   HD   WINDING, TENSIONING, OR GUIDING

520  DF  CONVOLUTE WINDING OF MATERIAL {17}
522  DF  .~ With cutting, perforating, or notching {4}
525  DF  .~.~ Longitudinal cutting {5}
525.4.~.~.~ Perforating

DEFINITION

Classification: 242/525.4

Perforating:

(under subclass 525) Subject matter wherein the cutting device is designed to puncture a thickness of the elongated material to create discrete apertures, typically to establish a predetermined tear line.