-
Structural block assembly
-
Patent number 10,487,504
-
Issue date Nov 26, 2019
-
Concrete Block Insulating Systems, Inc.
-
David L. Nickerson
-
E04 - BUILDING
-
-
-
Masonry unit
-
Patent number 9,366,028
-
Issue date Jun 14, 2016
-
David L. Nickerson
-
E04 - BUILDING
-
-
-
-
-
-
Insulated block
-
Patent number 4,027,445
-
Issue date Jun 7, 1977
-
Korfil, Incorporated
-
David L. Nickerson
-
E04 - BUILDING