Building units and construction elements – Architectural stock material – Extruded shape
Patent
1991-05-30
1993-05-18
Word, A. Hugo
Building units and construction elements
Architectural stock material
Extruded shape
Patent
active
D03357120
REFERENCES:
patent: D307485 (1990-04-01), Westphal et al.
patent: D311961 (1990-11-01), Westphal et al.
patent: 4286716 (1981-09-01), Budich et al.
Clark Doris
Mikron Industries
Word A. Hugo
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