Building units and construction elements – Architectural stock material – Extruded shape
Patent
1991-12-26
1994-03-22
Hugo, A. Hugo
Building units and construction elements
Architectural stock material
Extruded shape
Patent
active
D03454274
REFERENCES:
patent: D241339 (1976-09-01), La Borde
patent: D308729 (1990-06-01), Dallaire et al.
patent: D315604 (1991-03-01), Westphal et al.
1983 Sweet's Catalogue, Section 5.3/Ong. p. 2, top left of page, forth "C" channel illustration .
Van Hoffel Tube Corp. publication dated Feb. 1961 p. 6 channel located on left side, center-bottom of pg.
Aetnawall Partitioning systems brochure, dated Jul. 1984, second channel from left side of page.
Hersh Jeffrey B.
Moss Jeanne A.
Westphal Dennis C.
Certain-Teed Corporation
Clark Doris
Hugo A. Hugo
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