Building units and construction elements – Structure – Simulative
Patent
1983-02-03
1985-12-03
Word, A. Hugo
Building units and construction elements
Structure
Simulative
D25 80, D25 91
Patent
active
D02816270
REFERENCES:
patent: 1378735 (1921-05-01), Talbot
patent: 1886404 (1932-11-01), Kipple
patent: 2047882 (1936-07-01), McPherson
patent: 2205419 (1940-06-01), Kraemer
patent: 2749739 (1956-06-01), Zagray
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