US PATENT SUBCLASS 428 / 139
.~.~.~.~ Keyed

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}
131  DF  .~ Including aperture {3}
137  DF  .~.~ Composite web or sheet {1}
138  DF  .~.~.~ Including nonapertured component {1}
139.~.~.~.~ Keyed {1}
140  DF  .~.~.~.~.~> From both sides

DEFINITION

Classification: 428/139

(under subclass 138) Product wherein a protruding portion of one component enters into and engages the periphery of an aperture in another component.

SEE OR SEARCH THIS CLASS, SUBCLASS:

77+, for a panel of sheet attached to a surface of a base sheet or web and having a portion extending into an aperture in the base.

222, for a product embodying a component threaded through spaced apertures in another component.