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David C. Tragna
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West Milford, NJ, US
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Patents Grants
last 30 patents
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Patent Grant
Fuel gauge for hydrogen storage media
Patent number
7,254,983
Issue date
Aug 14, 2007
Hera USA Inc.
David H. DaCosta
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
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Patent Grant
Fuel gauge for hydrogen storage media
Patent number
7,237,428
Issue date
Jul 3, 2007
Hera USA, Inc.
David H. DaCosta
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Patents Applications
last 30 patents
Information
Patent Application
Fuel gauge for hydrogen storage media
Publication number
20040200735
Publication date
Oct 14, 2004
David H. DaCosta
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Application
Fuel gauge for hydrogen storage media
Publication number
20030070487
Publication date
Apr 17, 2003
David H. DaCosta
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS