Building units and construction elements – Structure – Simulative
Patent
1975-08-06
1977-05-10
Word, A. Hugo
Building units and construction elements
Structure
Simulative
D2501
Patent
active
D02442957
REFERENCES:
patent: D111624 (1938-10-01), Wagner
patent: D122857 (1940-10-01), Segall
patent: D125855 (1941-03-01), Wilde
patent: D200404 (1965-02-01), Brody et al.
Hause Robert F.
National Gypsum Company
Word A. Hugo
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