US PATENT SUBCLASS 52 / 411
.~ Additional material forming bond

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}
411.~ Additional material forming bond {2}
412  DF  .~.~> Extending into intersecting joints
413  DF  .~.~> Integral projections on planar face

DEFINITION

Classification: 52/411

(under subclass 408) Structure including an additional material which bonds the layers of the construction and also a dissimilar material tie acting between the layers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

415+, for another construction of more general application having an internal cast bonding section, e.g., brick and mortar.