Building units and construction elements – Prefabricated unit – Closure
Patent
1992-05-07
1993-11-09
Word, A. Hugo
Building units and construction elements
Prefabricated unit
Closure
Patent
active
D03412113
REFERENCES:
patent: D236201 (1975-08-01), Shoosh
patent: D238066 (1975-12-01), Howells
patent: D288367 (1987-02-01), Stollman
patent: 1641523 (1927-09-01), Bell
patent: 1662117 (1928-03-01), Kuhl
patent: 3895669 (1975-07-01), Heeling
Clark Doris
Word A. Hugo
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