Building units and construction elements – Structure – Having angular roof
Patent
1975-08-06
1977-05-24
Word, A. Hugo
Building units and construction elements
Structure
Having angular roof
D2503
Patent
active
D02444577
REFERENCES:
patent: D164305 (1951-08-01), King
patent: D183825 (1958-11-01), Browne
patent: D195549 (1963-07-01), Scholz
patent: D199897 (1964-12-01), Urban
patent: D220256 (1971-03-01), Jenn
patent: 3055380 (1962-09-01), Benka et al.
Von Hellens C. Robert
Word A. Hugo
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