US PATENT SUBCLASS 52 / 546
.~.~ Fitted within edge slot or notch

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

518  DF  LAPPED MULTIPLANAR SURFACING; E.G., SHINGLE TYPE {7}
543  DF  .~ With fastener or anchor {8}
546.~.~ Fitted within edge slot or notch

DEFINITION

Classification: 52/546

(under subclass 543) Structure in which the discrete means fits in a slot or notch extending inwardly of an edge of a facing section.