Building units and construction elements – Prefabricated unit – Underground service vault
Patent
1980-03-13
1981-10-20
Word, A. Hugo
Building units and construction elements
Prefabricated unit
Underground service vault
D25 19, D2501
Patent
active
D02614324
REFERENCES:
patent: D132569 (1942-05-01), Turner
patent: D242446 (1976-11-01), McNabb
patent: 2936504 (1960-05-01), Harris
patent: 3164111 (1965-01-01), Lann
patent: 3196813 (1965-07-01), McHugh, Jr.
Phillips C. A.
Word A. Hugo
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