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X-ray tube
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Patent number 9,653,248
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Issue date May 16, 2017
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Toshiba Electron Tubes & Devices Co., Ltd.
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Tomonari Ishihara
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3416018
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Patent number 3,416,018
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Issue date Dec 10, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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2907905
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Patent number 2,907,905
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Issue date Oct 6, 1959
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H01 - BASIC ELECTRIC ELEMENTS
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2209819
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Patent number 2,209,819
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Issue date Jul 30, 1940
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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2011643
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Patent number 2,011,643
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Issue date Aug 20, 1935
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H01 - BASIC ELECTRIC ELEMENTS
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1691447
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Patent number 1,691,447
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Issue date Nov 13, 1928
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H01 - BASIC ELECTRIC ELEMENTS