Building units and construction elements – Prefabricated unit – Closure
Patent
1983-10-24
1987-02-03
Word, A. Hugo
Building units and construction elements
Prefabricated unit
Closure
Patent
active
D02881322
REFERENCES:
patent: D44738 (1913-10-01), Taylor
patent: D137305 (1944-02-01), Hosken
patent: 3032351 (1962-05-01), Lewis, Jr.
patent: 3763615 (1973-10-01), Yamazaki
patent: 4384428 (1983-05-01), Cox
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