US PATENT SUBCLASS 428 / 423.9
.~.~ Next to natural rubber

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

411.1  DF  COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
423.1  DF  .~ Of polyamidoester (polyurethane, polyisocyanate, polycarbamate, etc.) {11}
423.9.~.~ Next to natural rubber

DEFINITION

Classification: 428/423.9

Next to natural rubber:

(under subclass 423.1) Product wherein a second contiguous layer is a natural rubber.