Building units and construction elements – Structure – Having intersecting angular or curved roofs
Patent
1980-08-08
1983-05-03
Word, A. Hugo
Building units and construction elements
Structure
Having intersecting angular or curved roofs
D25 22, D25 23, D2503
Patent
active
D02688743
REFERENCES:
patent: D193422 (1962-08-01), Scholz
patent: D255495 (1980-06-01), Sundstrom et al.
patent: 3744197 (1973-07-01), Wetzel, Jr.
patent: 3828496 (1974-08-01), Testaguzza et al.
Berg Soren B. D.
Sundstrom Uno T.
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