US PATENT SUBCLASS 428 / 72
.~ Including elements cooperating to form cells


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

68  DF  SHEET INCLUDING COVER OR CASING {6}
72.~ Including elements cooperating to form cells {1}
73  DF  .~.~> Honeycomb type cells extend perpendicularly to nonthickness layer


DEFINITION

Classification: 428/72

(under subclass 68) Product comprising elements or portions of the layer or enclosure which act together to form closed compartments.

(1) Note. The cells may be formed by a single enclosed layer which has apertures therethrough and which apertures coact with the casing or cover.

(2) Note. The cells or compartments may be vacant or occupied with a material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

178, 188 and 304+, for other products in which at lease one layer comprises cellular material, or in which components* and/or layers cooperate to form cells.