Building units and construction elements – Structure – Simulative
Patent
1980-04-11
1982-06-15
Word, A. Hugo
Building units and construction elements
Structure
Simulative
D25 80, D25 92, D2501
Patent
active
D02649969
REFERENCES:
patent: D186371 (1959-10-01), Johnson
patent: D256158 (1980-07-01), Ward
patent: 2131803 (1938-10-01), Henderson
patent: 3386217 (1968-06-01), Coutyre
Lindsley Warren F. B.
Word A. Hugo
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