US PATENT SUBCLASS 52 / 449
.~ Cementitious material covered by adhered apertured sheet

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

443  DF  WITH MEANS (E.G., APERTURES, PROJECTIONS) FOR RECEIVING SETTABLE MATERIAL FACING (E.G., PLASTER) {8}
449.~ Cementitious material covered by adhered apertured sheet

DEFINITION

Classification: 52/449

(under subclass 443) Structure in which the backer has a core of rigid water-settable material which is covered by an apertured sheet of material of a different kind, which sheet is adhered to the core.

SEE OR SEARCH THIS CLASS, SUBCLASS:

408+, for a panel including a sheet faced on both sides by other material.

782.1+, for another composite panel of facially contacting sheets.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles, 131+, for a stock material product in the form of a single or plural layer web or sheet and in which at least one component is apertured.