US PATENT SUBCLASS 493 / 135
.~.~.~.~ Of moving work

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}
133  DF  .~.~.~ Including heat sealing {2}
135.~.~.~.~ Of moving work

DEFINITION

Classification: 493/135

Of moving work:

(under subclass 133) Method or apparatus including raising the thermal level while the workpiece is in motion.