Building units and construction elements – Structure – Simulative
Patent
1976-04-22
1977-09-06
Word, A. Hugo
Building units and construction elements
Structure
Simulative
D2501
Patent
active
D02457121
REFERENCES:
patent: 964059 (1910-07-01), Sawyer
patent: 3349534 (1967-10-01), Wotherspoon
patent: 3855753 (1974-12-01), Terry
Gerry Martin E.
Gerry Martin E.
Word A. Hugo
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