(under the class definition) Apparatus in which (1) the stock, fiber, metal, weave, fabric or a modification thereof or (2) an added ingredient to bond, coat or impregnate stock material is specifically recited in a claim.
(1) Note. Special shapes or arrangements of filter material, or filter media retained or secured by means other than by bonding upon itself, are provided for elsewhere. in the subclasses beginning with subclass 474, or in subclass 529.
(2) Note. Under this definition, naming "Monel metal" or "copper", for example in a claim is a specific recitation of stock, "metal" or "fabric" is not a specific recitation.A named coating, for example, "tricresyl phosphate" is specific; a "viscous" coating is not.
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435, for deflectors with anti-erosion means.
474, and subclasses below or subclass 529 for special shapes or arrangements of filter material, or filter media retained or secured by means other than by bonding upon itself, are provided for elsewhere.
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428, Stock Material or Miscellaneous Articles,
98+, and 221+ for a stock material product in the form of a single or plural layer web or sheet and having some defined structured (e.g., aperture, nonplanar arrangement, specific size of fibers or particles).
