US PATENT SUBCLASS 52 / 526
.~.~ Tab and aperture

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}
526.~.~ Tab and aperture

DEFINITION

Classification: 52/526

(under subclass 519) Structure wherein one section is provided with a tab and the other section with an aperture intermediate the edges which receives said tab.