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Kelly M. Coffield
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Davenport, IA, US
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last 30 patents
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Patent Grant
Oxygen concentrator used in home health care
Patent number
D412577
Issue date
Aug 3, 1999
Litton Systems, Inc.
Sammy K. Mickelson
D24 - Medical and laboratory equipment
Information
Patent Grant
Oxygen concentrator
Patent number
5,858,062
Issue date
Jan 12, 1999
Litton Systems, Inc.
Kevin Gene McCulloh
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Modular, stackable pressure swing absorption concentrator
Patent number
5,549,736
Issue date
Aug 27, 1996
Litton Systems, Inc.
Kelly M. Coffield
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Energy recovering pressure balance scheme for a combination pressur...
Patent number
5,354,361
Issue date
Oct 11, 1994
Litton Industries, Inc.
Kelly M. Coffield
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL