(under subclass 243) Subject matter wherein the multifilament yarn includes filamentous or fibrous material which is of a cross section other than solid round, such as elliptical, multilobal, hollow, cruciform, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
215, 219, and 253, for other strand structures having components with particular cross sections.
SEE OR SEARCH CLASS
264, Plastic and Nonmetallic Article Shaping or Treating: Processes,
177, for extrusion of filaments having a particular cross section.
428, Stock Material or Miscellaneous Articles, 397+, for fibers or filaments of a particular cross section.
