Building units and construction elements – Prefabricated unit – Closure
Patent
1990-12-03
1994-01-25
Word, A. Hugo
Building units and construction elements
Prefabricated unit
Closure
Patent
active
D03436918
REFERENCES:
patent: 2581215 (1952-01-01), Stewart
patent: 2731117 (1956-01-01), Abelson
patent: 2792090 (1957-05-01), Ware, Jr.
patent: 4837977 (1989-06-01), Mauro
Ginnow-Merkert Hartmut
Guhl James C.
Weiss David J.
Andersen Corporation
Clark Doris
Word A. Hugo
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