US PATENT SUBCLASS 493 / 43
.~.~ Including heating

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

39  DF  CIGARETTE FILTER MAKING {5}
42  DF  .~ With shaping or compacting of filter material {4}
43.~.~ Including heating

DEFINITION

Classification: 493/43

Including heating:

(under subclass 42) Method or apparatus including applying energy to raise the thermal activity of the material being made into a filter.