(under subclass 269) Method or apparatus combined with forcing work material through an orifice or pulling, pushing, or stretching work material to thicken or thin the material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
338+, for an operation of this class, generally, combined with extruding, drawing, or attenuating.
SEE OR SEARCH CLASS
264, Plastic and Nonmetallic Article Shaping or Treating: Processes, for a method of forming material by forcing it through an orifice or wherein there is thinning or thickening flow of work material. See the line note under the definition of this class (493).
425, Plastic Article or Earthenware Shaping or Treating: Apparatus, for apparatus for forming material by forcing it through an orifice or wherein there is thinning or thickening flow of work material. See the line note under the definition of this class (493).
