(under subclass 522) Apparatus in which the media is comprised of (1) a woven, substantially regularly looped or linked metal of strand or ribbon form or (2) sheet material which has been more or less regularly provided with discontinuous slits or cuts and thereafter subjected to tension forces to open up the slits or cuts.
SEE OR SEARCH CLASS
428, Stock Material or Miscellaneous Articles,
131, for a single or plural layer stock material product embodying an apertured component and subclasses 175+, 190, 193, and 196+ for such a product having a component embodying mechanically interengaged strands or strand-portions, subclass 596 for metallic stock which is apertured, and subclass 613 for such stock or article which is porous.
442, Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, etc.),
