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Akimitsu Okura
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Hitachinaka, JP
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Patents Grants
last 30 patents
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Patent Grant
Electron beam apparatus and high-voltage discharge prevention method
Patent number
7,274,017
Issue date
Sep 25, 2007
Hitachi High-Technologies Corporation
Akimitsu Okura
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electron beam apparatus and high-voltage discharge prevention method
Patent number
6,949,752
Issue date
Sep 27, 2005
Hitachi High-Technologies Corporation
Akimitsu Okura
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
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Patent Application
Electron beam apparatus and high-voltage discharge prevention method
Publication number
20050218777
Publication date
Oct 6, 2005
Akimitsu Okura
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Electron beam apparatus and high-voltage discharge prevention method
Publication number
20030155525
Publication date
Aug 21, 2003
Akimitsu Okura
H01 - BASIC ELECTRIC ELEMENTS