US PATENT SUBCLASS 52 / 530
.~.~.~ Plural oppositely opening

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}
519  DF  .~ Interfitted sections {14}
529  DF  .~.~ Reentrant {2}
530.~.~.~ Plural oppositely opening {1}
531  DF  .~.~.~.~> With terminal flange extending beyond joint

DEFINITION

Classification: 52/530

(under subclass 529) Structure wherein the folded back portion of one of the sections interfits for hooks into a bent portion of the adjacent section, the spaces defined by folded and bent portion opening towards each other.