US PATENT SUBCLASS 493 / 274
.~.~ And heating or drying


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

269  DF  TUBE MAKING {15}
272  DF  .~ With coating {4}
274.~.~ And heating or drying


DEFINITION

Classification: 493/274

And heating or drying:

(under subclass 272) Method or apparatus combined with applying thermal energy to the workpiece or to the flowable material; or combined with allowing the vapor pressure of the flowable material to cause the material to solidify.

(1) Note. Heat applied in this subclass may be to soften thermoplastic coating material, to cure thermosetting coating material, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

41, for making a cigarette filter including application of heat to secure the wrapper thereto.

129+, for making a rigid container with application of adhesive and heat sealing.

133+, for making a rigid container including heat sealing.

189+, for making a pliable container including heat sealing. 332, for making an article of this class, generally including application of adhesive and heating or drying.

341, for an operation of this class including heat application combined with cutting, breaking, tearing, or abrading.