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Digital protective relay system
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Patent number 4,709,295
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Issue date Nov 24, 1987
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Kabushiki Kaisha Toshiba
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Mitsuru Yamaura
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Protective relay system
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Patent number 4,577,254
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Issue date Mar 18, 1986
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Kabushiki Kaisha Toshiba
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Mitsuru Yamaura
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Protective relay system
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Patent number 4,541,058
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Issue date Sep 10, 1985
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Tokyo Shibaura Denki Kabushiki Kaisha
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Fumio Andow
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Protective relaying system
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Patent number 4,420,805
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Issue date Dec 13, 1983
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Tokyo Shibaura Denki Kabushiki Kaisha
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Mitsuru Yamaura
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Digital protective relaying devices
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Patent number 4,339,802
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Issue date Jul 13, 1982
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Tokyo Shibaura Denki Kabushiki Kaisha
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Mitsuru Yamaura
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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