Building units and construction elements – Architectural stock material – Construction block or brick type
Patent
1995-03-23
1996-05-28
Zarfas, Louis S.
Building units and construction elements
Architectural stock material
Construction block or brick type
Patent
active
D03702723
REFERENCES:
patent: D311444 (1990-10-01), Forsberg
patent: 1495022 (1924-05-01), Langer
patent: 1662300 (1928-03-01), Covell
patent: 1802874 (1931-04-01), Casey et al.
patent: 4490075 (1984-12-01), Risi et al.
patent: 5161918 (1992-11-01), Hodel
Risi Angelo
Risi Antonio
Andoll Gregory
Rothbury Investments Ltd.
Zarfas Louis S,.
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