US PATENT SUBCLASS 52 / 309.11
.~.~.~.~ Tie between exterior faces

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

309.1  DF  WITH SYNTHETIC RESINOUS COMPONENT {4}
309.4  DF  .~ Foam {4}
309.8  DF  .~.~ Adjacent nonporous layer {2}
309.9  DF  .~.~.~ Nonporous exterior faces {1}
309.11.~.~.~.~ Tie between exterior faces

DEFINITION

Classification: 52/309.11

Structure under 309.9 wherein the exterior, nonporous components are tied together by an element distinct from the porous, foam-like component therebetween.