Elmendorf Armin, Vaughan Thomas W, Etzold Roland: Textured wood panel. February 1, 1972: US3639200 (48 worldwide citation)

The invention relates to a ligno-cellulosic building board having a nonrepetitive textured surface on at least one side. This side consists of a layer of ligno-cellulosic particles with elevations and depressions, the specific gravity of the particles of the elevations being substantially the same a ...

Elmendorf Armin, Etzold Roland: Method of making a wood fiber board having a relief-textured surface. Elmendorf Armin, Townsend and Townsend, April 29, 1975: US3880687 (36 worldwide citation)

In obtaining a texture or a pattern on a wood fiber board by conventional procedures, as by means of a die, high pressures must be used so that the material of which the board is made is compacted and generally made denser and harder in the depressions of the textured surface. In the process of reli ...

Elmendorf Armin, Etzold Roland: Panel with decorative bark surface and method of making the same. Elmendorf Research, Townsend and Townsend, June 3, 1975: US3887415 (13 worldwide citation)

A panel formed from a substrate such as a ligno-cellulosic board including insulation board, softwood plywood and particle board, and a protective surface for the substrate comprised of bark chips. The surface is harder than the natural, weathered bark of trees and imparts a mottled and textured sur ...

Etzold Roland: Method of making a decorative building panel of lumber planks and laminated veneer plies. Limbach Limbach & Sutton, April 15, 1975: US3878017 (6 worldwide citation)

This invention relates to a decorative building panel and the method of making the same. The panel consists in part of laminated veneer plies, with an outer layer of individual lumber planks; the surface of the planks being not necessarily in the same plane from plank to plank or within a plank.

Etzold Roland: Methode de redressement de panneaux a base de bois, et panneaux ainsi obtenus, Method for flattening wood based panels and panels produced thereby. Etzold Roland, MACRAE & CO, January 6, 1981: CA1092771

ABSTRACT This invention relates to a method forflattening wood based panels such as plywood, flake boardor fiber board panels, which have an undesirable curvature,due to an imbalanced construction, or due to a certainproduction process. The invention also relates to thepanel produced by the method d ...