Building units and construction elements – Structure – Having angular roof
Patent
1979-01-17
1981-01-27
Word, A. Hugo
Building units and construction elements
Structure
Having angular roof
D2503
Patent
active
D02580861
REFERENCES:
patent: D216873 (1970-03-01), Spain et al.
patent: D239524 (1976-04-01), Perata
patent: D250721 (1979-02-01), Fraley
patent: D250721 (1979-02-01), Fraley
patent: D252107 (1979-06-01), Lindberg
patent: D264457 (1977-05-01), Dickerson
Behrendt Dennis B.
Burt Robert B.
Crawford Herman
McKeag Wm. A.
Pokorny Ann R.
Schroeder Everett J.
Word A. Hugo
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