US PATENT SUBCLASS 52 / 523
.~.~ Edge and slit

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}
523.~.~ Edge and slit {2}
524  DF  .~.~.~> Interfitting slits
525  DF  .~.~.~> With tab

DEFINITION

Classification: 52/523

(under subclass 519) Structure in which one section is provided with a relatively narrow slit extending inwardly from an edge thereof, which slit receives the marginal edge of the adjacent section.