US PATENT SUBCLASS 428 / 177
.~.~ Differential nonplanarity at margin

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

98  DF  STRUCTURALLY DEFINED WEB OR SHEET (E.G., OVERALL DIMENSION, ETC.) {20}
174  DF  .~ Nonplanar uniform thickness material {5}
177.~.~ Differential nonplanarity at margin

DEFINITION

Classification: 428/177

(under subclass 174) Product in which the nonplanarity occurs only at or in the area adjacent, an edge portion of the total

product; or in which the nonplanarity at or adjacent the edge of the product differs substantially from that which exists over the remainder thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

121+, for a product wherein the marginal nonplanarity is in the form of a fold.