US PATENT SUBCLASS 52 / 280
.~ Trihedral shafts-type corner

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

272  DF  INTERSECTION OF WALL TO FLOOR, CEILING, ROOF, OR ANOTHER WALL (I.E., TWO-WAY CORNER CONSTRUCTION) {8}
280.~ Trihedral shafts-type corner

DEFINITION

Classification: 52/280

(under subclass 272) Structure including at least three elongated rigid shafts lying in three intersecting planes each containing two of the shafts at least one sheetlike member forming a barrier or facing attached to at least one of the members and being parallel to its plane.