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Melvin Gary CLARK
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Pipe Creek, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Rail car door closer system with wing closers
Patent number
7,997,210
Issue date
Aug 16, 2011
Melvin Gary Clark
B61 - RAILWAYS
Information
Patent Grant
Rail car door closer
Patent number
7,559,283
Issue date
Jul 14, 2009
Melvin Gary Clark
B61 - RAILWAYS
Information
Patent Grant
Rail car door closer
Patent number
6,886,473
Issue date
May 3, 2005
Martin Marietta Materials Southwest, Ltd.
David P. Marchiori
B61 - RAILWAYS
Patents Applications
last 30 patents
Information
Patent Application
Rail Car Door Closer System with Wing Closers
Publication number
20100258030
Publication date
Oct 14, 2010
Melvin Gary CLARK
B61 - RAILWAYS
Information
Patent Application
Rail car door closer
Publication number
20070193472
Publication date
Aug 23, 2007
Melvin Gary Clark
B61 - RAILWAYS
Information
Patent Application
Rail car door closer
Publication number
20040040462
Publication date
Mar 4, 2004
MARTIN MARIETTA MATERIALS SOUTHWEST, LTD
David P. Marchiori
B61 - RAILWAYS