Building units and construction elements – Architectural stock material – Construction block or brick type
Patent
1997-08-22
2000-12-05
Zarfas, Louis S.
Building units and construction elements
Architectural stock material
Construction block or brick type
2501
Patent
active
D04348575
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Delehanty Robert A.
Scheiwiller Rolf
Spencer George H.
Voorhees Catherine M.
Zarfas Louis S,.
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