Building units and construction elements – Structure – Having curved or vaulted roof
Patent
1994-09-23
1996-05-07
Zarfas, Louis S.
Building units and construction elements
Structure
Having curved or vaulted roof
D25 17, D25 21
Patent
active
D03696707
REFERENCES:
patent: D138447 (1944-08-01), Van Scoy et al.
patent: D305790 (1990-01-01), Soderstrom
patent: 3059657 (1962-10-01), Turner
Cassan Lynn S.
Hannon Monica A.
Maclean P. Scott
Zarfas Louis S,.
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