US PATENT SUBCLASS 52 / 674
.~.~.~ Corrugated

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

633  DF  OPENWORK; E.G., TRUSS, TRELLIS, GRILLE, SCREEN, FRAME, OR REBAR CHAIR {12}
660  DF  .~ Fabric or lattice; e.g., indeterminate grating {7}
673  DF  .~.~ Perforated {2}
674.~.~.~ Corrugated

DEFINITION

Classification: 52/674

(under subclass 673) Structure comprising continuous alternating ridges and grooves.

SEE OR SEARCH THIS CLASS, SUBCLASS:

671, for a corrugated expanded metal sheet.

783.11+, for a sandwich or hollow panel with a corrugated sheet and see search notes.