-
Glass block fire wall
-
Patent number 5,845,443
-
Issue date Dec 8, 1998
-
Randolf Andrew Wirkus
-
E04 - BUILDING
-
Glass brick wall
-
Patent number 5,740,646
-
Issue date Apr 21, 1998
-
Randolf Andrew Wirkus
-
E04 - BUILDING
-
-
Brick walls
-
Patent number 5,640,818
-
Issue date Jun 24, 1997
-
Randolf Andrew Wirkus
-
E04 - BUILDING
-
Glass block wall
-
Patent number 5,640,819
-
Issue date Jun 24, 1997
-
Randolf Andrew Wirkus
-
E04 - BUILDING