Building units and construction elements – Structure – Having angular roof
Patent
1977-06-13
1979-05-08
Word, A. Hugo
Building units and construction elements
Structure
Having angular roof
D25 1, D25 16, D25 22, D2503
Patent
active
D02518031
REFERENCES:
patent: D197174 (1963-12-01), Filley, Jr.
patent: D197963 (1964-04-01), Bruns et al.
patent: D200225 (1965-02-01), Benjamin
patent: D208293 (1967-08-01), Hay
patent: D208303 (1967-08-01), Musikantow et al.
patent: 3690334 (1972-09-01), Miller
Nilsson B. G.
Word A. Hugo
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