Building units and construction elements – Architectural stock material – Construction block or brick type
Patent
1999-04-12
2000-09-19
Zarfas, Louis S.
Building units and construction elements
Architectural stock material
Construction block or brick type
2501
Patent
active
D04310829
REFERENCES:
patent: 4059362 (1977-11-01), Smith
patent: 4869617 (1989-09-01), Chiodo
patent: 5118216 (1992-06-01), Smith
patent: 5134815 (1992-08-01), Pickett
patent: 5336016 (1994-08-01), Baatz
patent: 5494371 (1996-02-01), Oberth et al.
Delehanty Robert A.
McCormick Jr. Leo H.
Zarfas Louis S,.
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