Building units and construction elements – Prefabricated unit – Closure
Patent
1982-01-11
1984-04-17
Word, A. Hugo
Building units and construction elements
Prefabricated unit
Closure
Patent
active
D02735180
REFERENCES:
patent: D204747 (1966-05-01), Barrell, Jr.
patent: D260117 (1981-08-01), Peirce et al.
Architectural Precast Concrete, c. 1973, p. 70, FIG. 3.6.1, panel.
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