US PATENT SUBCLASS 52 / 548
.~.~.~ With integral piercing point

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}
547  DF  .~.~ Edge-embracing {1}
548.~.~.~ With integral piercing point

DEFINITION

Classification: 52/548

(under subclass 547) Structure in which the discrete means is provided with a piercing point integral with it.