Building units and construction elements – Prefabricated unit
Patent
1983-04-21
1986-08-12
Word, A. Hugo
Building units and construction elements
Prefabricated unit
D25 73, D25 77
Patent
active
D02851199
REFERENCES:
patent: 1906108 (1933-04-01), Schlueter
patent: 2089763 (1937-08-01), Rotinoff
patent: 4104868 (1978-08-01), Jackson
Conover Richard C.
Word A. Hugo
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