US PATENT SUBCLASS 428 / 635
.~.~ Four or more distinct components with alternate recurrence of each type component

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}
635.~.~ Four or more distinct components with alternate recurrence of each type component

DEFINITION

Classification: 428/635

(under subclass 615) Subject matter in which the composite has four or more spatially distinct components, e.g., layers, in which two types of components appear alternately in the same sequence in a visual scanning of the composite cross section; for example, a sequence of components are exemplified by A, B, A, B.

(1) Note. A "symmetrical" sequence of the type A, B, C, B, A is not a basis for placement in this subclass.