US PATENT SUBCLASS 493 / 244
.~.~.~ Of previously folded material (e.g., refolding, etc.)

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}
243  DF  .~.~ Including folding {8}
244.~.~.~ Of previously folded material (e.g., refolding, etc.) {1}
245  DF  .~.~.~.~> Flap

DEFINITION

Classification: 493/244

Of previously folded material (e.g., refolding, etc.):

(under subclass 243) Method or apparatus comprising bendingly stressing a sheet or web workpiece beyond its elastic limit along a line to form a permanent crease, wherein the sheet or web had previously been provided with a permanent crease along the same line.