Building units and construction elements – Structure – Simulative
Patent
1983-07-08
1986-04-15
Word, A. Hugo
Building units and construction elements
Structure
Simulative
Patent
active
D02834464
REFERENCES:
patent: D228453 (1973-09-01), Greer
patent: D270765 (1983-09-01), Kenin
patent: 3974616 (1976-08-01), Beckley
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