Building units and construction elements – Architectural stock material – Construction block or brick type
Patent
1997-10-21
2000-09-26
Zarfas, Louis S.
Building units and construction elements
Architectural stock material
Construction block or brick type
2501
Patent
active
D04313054
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Barth Gunter
Schmitz Michael
Delehanty Robert A.
F. von Langsdorff Licensing Ltd.
Zarfas Louis S,.
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