US PATENT SUBCLASS 428 / 686
.~.~ Adjacent functionally defined components

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

544  DF  ALL METAL OR WITH ADJACENT METALS {31}
615  DF  .~ Composite; i.e., plural, adjacent, spatially distinct metal components (e.g., layers, joint, etc.) {15}
686.~.~ Adjacent functionally defined components

DEFINITION

Classification: 428/686

(under subclass 615) Subject matter in which adjacent components of a composite are claimed, not in terms of their composition, but in terms of the properties of the components, their past histories, etc., e.g., "a solid layer", etc.