US PATENT SUBCLASS 428 / 71
.~ Foamed or expanded material encased

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

68  DF  SHEET INCLUDING COVER OR CASING {6}
71.~ Foamed or expanded material encased

DEFINITION

Classification: 428/71

(under subclass 68) Product wherein the enclosed sheet comprised a heterogeneous mixture of a gas phase dispersed therethrough.

(1) Note. See (1) Note and search note in subclass 69 above, regarding the placement of certain foamed or expanded products.

SEE OR SEARCH THIS CLASS, SUBCLASS:

158+, 310+ and 423+, for other products containing foamed or expanded material, especially urethane.