US PATENT SUBCLASS 493 / 237
.~.~.~ Notching on 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}
237.~.~.~ Notching on work edge

DEFINITION

Classification: 493/237

Notching on work edge:

(under subclass 227) Method or apparatus including piercing, ripping, or engaging with a crystalline tool to form a recession or slit in a margin of a sheet or web workpiece.

SEE OR SEARCH THIS CLASS, SUBCLASS:

232, for forming a pliable container including notching the work edge, including folding.