US PATENT SUBCLASS 493 / 229
.~.~.~.~ Notching of work edge

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

51  DF  CONTAINER MAKING {2}
186  DF  .~ Pliable container (e.g., bag, envelope, etc.) {9}
227  DF  .~.~ With cutting, breaking, tearing, or abrading {5}
228  DF  .~.~.~ Including form-scoring {2}
229.~.~.~.~ Notching of work edge

DEFINITION

Classification: 493/229

Notching of work edge:

(under subclass 228) Method or apparatus wherein the piercing, ripping, or engaging with a crystalline tool is to form a recession or slit in a margin of a sheet or web workpiece.