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last 30 patents
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Patent Grant
Air valve device
Patent number
7,997,296
Issue date
Aug 16, 2011
Ming Teng
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
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Patent Application
Air Valve
Publication number
20100096572
Publication date
Apr 22, 2010
Ming Teng
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Air valve device
Publication number
20100096024
Publication date
Apr 22, 2010
Ming Teng
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...