Building units and construction elements – Structure – Simulative
Patent
1980-11-06
1982-11-16
Word, A. Hugo
Building units and construction elements
Structure
Simulative
D2501
Patent
active
D02669498
REFERENCES:
patent: D249366 (1978-09-01), Jury
patent: 2818145 (1957-12-01), Bragman et al.
patent: 3389505 (1968-06-01), Zitomer
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