US PATENT SUBCLASS 52 / 448
.~.~ Interengaging edge joint

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}
447  DF  .~ Separate sections with connecting feature {1}
448.~.~ Interengaging edge joint

DEFINITION

Classification: 52/448

(under subclass 447) Structure including a physical configuration of opposed edges of sections which mutually interengage.