US PATENT SUBCLASS 428 / 297.1
.~.~.~ Two or more layers

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

221  DF  WEB OR SHEET CONTAINING STRUCTURALLY DEFINED ELEMENT OR COMPONENT {9}
292.1  DF  .~ Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity {7}
295.1  DF  .~.~ Fiber embedded in or on the surface of a natural or synthetic rubber matrix {4}
297.1.~.~.~ Two or more layers

DEFINITION

Classification: 428/297.1

Two or more layers:

(under subclass 295.1) Subject matter wherein the fiber-containing rubber matrix is associated with one or more additional layers.