US PATENT SUBCLASS 52 / 450
.~ Corrugated

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

443  DF  WITH MEANS (E.G., APERTURES, PROJECTIONS) FOR RECEIVING SETTABLE MATERIAL FACING (E.G., PLASTER) {8}
450.~ Corrugated {2}
451  DF  .~.~> Laminated on planar sheet
452  DF  .~.~> With transverse filament

DEFINITION

Classification: 52/450

(under subclass 443) Structure wherein the backer includes a sheet which is shaped to form continuous alternating ridges and grooves on opposed faces.

SEE OR SEARCH THIS CLASS, SUBCLASS:

453, for a backer having a groove formed into a face.

630, for a residual corrugated panel.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles,

156+, for a stock material product having a component of varying thickness for that class (428), particularly subclasses 163 and 167+ for such a product having parallel ribs and grooves, and subclasses 174+ for a stock material having a nonplanar uniform thickness component, particularly subclasses 182+ for a corrugated component.