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Switching power supply
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Patent number 5,349,523
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Issue date Sep 20, 1994
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Yokogawa Electric Corporation
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Kiyoharu Inou
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Signal conditioner
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Patent number 5,289,500
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Issue date Feb 22, 1994
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Yokogawa Electric Corporation
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Kiyoharu Inou
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Ringing choke converter
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Patent number 4,931,918
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Issue date Jun 5, 1990
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Yokogawa Electric Corporation
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Kiyoharu Inou
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G05 - CONTROLLING REGULATING
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DC/DC converter
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Patent number 4,685,039
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Issue date Aug 4, 1987
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Yokogawa Hokushin Electric Corporation
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Kiyoharu Inou
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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DC/DC converter
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Patent number 4,680,688
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Issue date Jul 14, 1987
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Yokogawa Hokushin Electric Corporation
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Kiyoharu Inou
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER