Building units and construction elements – Structure – Simulative
Patent
1979-09-25
1982-03-02
Word, A. Hugo
Building units and construction elements
Structure
Simulative
D25 80, D25 92, D2501
Patent
active
D02632560
REFERENCES:
patent: D203566 (1966-01-01), Hayes
patent: 3629988 (1971-12-01), Zylstra
patent: 4226070 (1980-10-01), Aragon
Field Lawrence I.
Word A. Hugo
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