Building units and construction elements – Structure – Four or more levels
Patent
1986-10-10
1990-02-20
Word, A. Hugo
Building units and construction elements
Structure
Four or more levels
D25 31
Patent
active
D03062104
REFERENCES:
patent: D214367 (1969-06-01), Mills, Jr. et al.
patent: D265226 (1982-06-01), Carlat et al.
patent: 3768016 (1973-10-01), Townsend et al.
patent: 4434595 (1984-03-01), Brabant
Olson Henry A.
Stanton Leonard T.
Thiemann, III Henry J.
Thiemann, III Henry J.
Word A. Hugo
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