US PATENT SUBCLASS 493 / 136
.~.~.~ By interfitting of container portions

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}
52  DF  .~ Rigid container (e.g., box, carton, cap, cup, etc.) {10}
121  DF  .~.~ Securing {6}
136.~.~.~ By interfitting of container portions {2}
137  DF  .~.~.~.~> Interlocking tab and slot {2}
140  DF  .~.~.~.~> Inwardly folded flange

DEFINITION

Classification: 493/136

By interfitting of container portions:

(under subclass 121) Method or apparatus wherein fastening is accomplished by positioning a portion of a workpiece under another portion to restrict movement thereof.