Building units and construction elements – Architectural stock material – Extruded shape
Patent
1986-10-10
1989-10-03
Word, A. Hugo
Building units and construction elements
Architectural stock material
Extruded shape
Patent
active
D03038440
REFERENCES:
patent: 2847730 (1958-08-01), Warwick
patent: 2849077 (1958-08-01), Kopke
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