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Issue date Dec 20, 1994
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Kabushiki Kaisha Toshiba
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Noburu Fukushima
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Insulating composition
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Kabushiki Kaisha Toshiba
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PTC ceramic composition
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Kabushiki Kaisha Toshiba
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Issue date Aug 17, 1982
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Tokyo Shibaura Denki Kabushiki Kaisha
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Tsutomu Okutomi
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Vacuum circuit breaker
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Patent number 4,129,761
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Issue date Dec 12, 1978
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Tokyo Shibaura Electric Co., Ltd.
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Tsutomu Okutomi
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H01 - BASIC ELECTRIC ELEMENTS
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Vacuum circuit breaker
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Patent number 4,129,760
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Issue date Dec 12, 1978
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Tokyo Shibaura Electric Co., Ltd.
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Tsutomu Okutomi
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H01 - BASIC ELECTRIC ELEMENTS