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
D02669528
REFERENCES:
patent: D251133 (1979-02-01), Bancroft et al.
patent: D251444 (1979-03-01), Bancroft et al.
patent: 4175357 (1979-11-01), Goldhaber
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