US PATENT SUBCLASS 428 / 35.9
.~.~.~ Three or more layers (continuous layer)

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

34.1  DF  HOLLOW OR CONTAINER TYPE ARTICLE (E.G., TUBE, VASE, ETC.) {7}
35.7  DF  .~ Polymer or resin containing (i.e., natural or synthetic) {9}
35.8  DF  .~.~ Elemental metal containing (e.g., substrate, foil, film, coating, etc.) {1}
35.9.~.~.~ Three or more layers (continuous layer)

DEFINITION

Classification: 428/35.9

Three or more layers (continuous layer):

(under subclass 35.8) Article* which contains 3 or more layers.

(1) Note. See subclass 34.6, Note (1) for what a layer is and what it is not. See Note (2) for what to do when the number of layers is unclear from the claims or the specification.