Building units and construction elements – Architectural stock material – Extruded shape
Patent
1988-02-24
1990-10-23
Word, A. Hugo
Building units and construction elements
Architectural stock material
Extruded shape
Patent
active
D03115836
REFERENCES:
patent: 241536 (1976-09-01), Shell
patent: 4080756 (1978-03-01), Heaney
patent: 4447985 (1984-05-01), Weber et al.
patent: 4702037 (1987-10-01), Hollowell et al.
Clark Doris
Friedkin Industries, Inc.
Saccocio Richard M.
Word A. Hugo
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