US PATENT SUBCLASS 428 / 163
.~.~.~ Parallel ribs and/or grooves

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}
156  DF  .~ Including variation in thickness {7}
161  DF  .~.~ With component conforming to contour of nonplanar surface {4}
163.~.~.~ Parallel ribs and/or grooves

DEFINITION

Classification: 428/163

(under subclass 161) Product in which the nonplanar face of the nonuniform thickness component is in the form of ridges and/or furrows of substantial length and width extending along or across the component and in mutual parallelism.