Building units and construction elements – Structure – Simulative
Patent
1975-12-29
1977-11-22
Word, A. Hugo
Building units and construction elements
Structure
Simulative
D2501
Patent
active
D02464705
REFERENCES:
patent: D230269 (1974-02-01), Shuey
patent: 2577170 (1951-12-01), Walters
patent: 2858463 (1958-10-01), Koda et al.
patent: 3641983 (1972-02-01), Keen et al.
patent: 3838535 (1974-10-01), Larws
Lind John E.
Word A. Hugo
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