US PATENT SUBCLASS 112 / 420
.~.~ Fibrous or particulate layer between other layers


Current as of: June, 1999
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112 /   HD   SEWING

400  DF  PRODUCTS {2}
402  DF  .~ Sewn web or sheet {19}
420.~.~ Fibrous or particulate layer between other layers


DEFINITION

Classification: 112/420

(under subclass 402) Product wherein a body of fibers (including paper or felt) or particles is disposed in a layer intermediate two surface layers of material differing in structure or composition from the intermediate layer, with the fiber or particulate layer stitched to at least one of the surface layers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

417, for a product including a relatively narrow strip or strand enclosed between layers or components.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles,

161+, for a nonsewn composite stock material including a component of varying thickness and at least one other component conforming to the nonplanar surfaces of the first named component; subclasses 195+ for plural web components differentially or discontinuously adhered.

442, Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, etc.), 295+, for a woven fabric containing a paper or wood pulp layer, subclasses 320+ for a felt fabric, and subclasses 412 and 413 for a nonwoven fabric containing paper or wood.