US PATENT SUBCLASS 52 / 409
.~ Lapped multiplanar components

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

408  DF  DISPARATE SHEET LAMINA BETWEEN EXPOSED SURFACES OF WALL, FLOOR, OR ROOF (E.G., VAPOR BARRIER, WATERPROOFING MEMBRANE) {3}
409.~ Lapped multiplanar components

DEFINITION

Classification: 52/409

(under subclass 408) Structure in which the sheet form separator is between the lapped portions of components forming multiplanar surfacing.

SEE OR SEARCH THIS CLASS, SUBCLASS:

394, for a similar construction wherein the separator is resilient.

518+, for a residual lapped multiplanar surfacing.