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Atsuo Koyama
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Nagareyama, JP
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last 30 patents
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Patent Grant
Circular fluorescent lamp
Patent number
5,034,655
Issue date
Jul 23, 1991
Hitachi, Ltd.
Seiichi Murayama
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Lighting apparatus for an electric discharge lamp
Patent number
4,694,224
Issue date
Sep 15, 1987
Hitachi Lighting, Ltd.
Hisato Nakagawa
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR