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Robert J. Flathau
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Elgin, IL, US
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Patents Grants
last 30 patents
Information
Patent Grant
Jump form system
Patent number
9,297,173
Issue date
Mar 29, 2016
Dayton Superior Corporation
Robert A. Spindler
E04 - BUILDING
Information
Patent Grant
Jump form system
Patent number
8,464,996
Issue date
Jun 18, 2013
Dayton Superior Corporation
Robert A. Spindler
E04 - BUILDING
Information
Patent Grant
Conversion corner chamfer for form work
Patent number
6,865,859
Issue date
Mar 15, 2005
Dayton Superior Corporation
Robert J. Flathau
E04 - BUILDING
Information
Patent Grant
Outside conversion corner for form work
Patent number
6,733,059
Issue date
May 11, 2004
Safway Formwork Systems, LLC
Robert J. Flathau
E04 - BUILDING
Information
Patent Grant
Outside conversion corner for form work
Patent number
6,419,204
Issue date
Jul 16, 2002
Safway Formwork Systems, LLC
Robert J. Flathau
E04 - BUILDING
Information
Patent Grant
Method of retrofitting a concrete form
Patent number
6,182,346
Issue date
Feb 6, 2001
Symons Corporation
Robert J. Flathau
E04 - BUILDING
Information
Patent Grant
Concrete form with safety bar
Patent number
5,707,539
Issue date
Jan 13, 1998
Symons Corporation
Robert J. Flathau
E04 - BUILDING
Information
Patent Grant
Scaffold bracket
Patent number
5,316,253
Issue date
May 31, 1994
Symons Corporation
Robert J. Flathau
E04 - BUILDING
Information
Patent Grant
Slab joint system and apparatus for joining concrete slabs in side-...
Patent number
5,261,635
Issue date
Nov 16, 1993
Symons Corporation
Robert J. Flathau
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Spreader clip assembly for a concrete wall form
Patent number
3,981,476
Issue date
Sep 21, 1976
Symons Corporation
Kenneth B. Alexander
E04 - BUILDING
Patents Applications
last 30 patents
Information
Patent Application
Jump Form System
Publication number
20130248681
Publication date
Sep 26, 2013
DAYTON SUPERIOR CORPORATION
Robert A. Spindler
E04 - BUILDING
Information
Patent Application
Jump Form System
Publication number
20090189053
Publication date
Jul 30, 2009
Dayton Superior Corporation
Robert A. Spindler
E04 - BUILDING
Information
Patent Application
Outside conversion corner for form work
Publication number
20050086903
Publication date
Apr 28, 2005
Robert J. Flathau
E04 - BUILDING
Information
Patent Application
Conversion corner chamfer for form work
Publication number
20020195536
Publication date
Dec 26, 2002
Safway Formwork Systems, LLC
Robert J. Flathau
E04 - BUILDING
Information
Patent Application
Outside conversion corner for form work
Publication number
20020145100
Publication date
Oct 10, 2002
Safway Formwork Systems, LLC
Robert J. Flathau
E04 - BUILDING