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Norio Matsumoto
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Kumagaya, JP
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last 30 patents
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Patent Grant
Electromagnetic drive unit
Patent number
4,602,232
Issue date
Jul 22, 1986
Hitachi Metals, Ltd.
Teruo Umehara
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Actuator for use in a pickup device for a video disk player
Patent number
4,490,815
Issue date
Dec 25, 1984
Hitachi Metals, Ltd.
Teruo Umehara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
D.C. Electromagnetic actuator
Patent number
4,422,060
Issue date
Dec 20, 1983
Hitachi Metals, Ltd.
Norio Matsumoto
H01 - BASIC ELECTRIC ELEMENTS