Building units and construction elements – Structure – Having angular roof
Patent
1977-06-30
1979-01-16
Word, A. Hugo
Building units and construction elements
Structure
Having angular roof
D25 31, D2503
Patent
active
D02508419
REFERENCES:
patent: D189021 (1960-10-01), Smith, Jr.
patent: D220684 (1971-05-01), Page et al.
patent: D221842 (1971-09-01), Sebastian
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