Building units and construction elements – Architectural stock material – Extruded shape
Patent
1990-03-15
1992-01-14
Word, A. Hugo
Building units and construction elements
Architectural stock material
Extruded shape
Patent
active
D03232212
REFERENCES:
patent: D238667 (1976-02-01), Bero
patent: D290753 (1987-07-01), Nilsson
patent: 4513552 (1985-04-01), Breitharpt
patent: 4662108 (1987-05-01), Romero et al.
Clark Doris
Feury Robert Thomas
Smilowitz Herbert
Word A. Hugo
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