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Method of making steam turbine blade
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Patent number 6,493,936
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Issue date Dec 17, 2002
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Hitachi, Ltd.
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Hiroyuki Doi
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Method of making a turbine blade
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Patent number 6,305,078
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Issue date Oct 23, 2001
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Hitachi, Ltd.
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Masao Shiga
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Electron microscope
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Patent number 5,898,177
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Issue date Apr 27, 1999
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Hitachi, Ltd.
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Kishio Hidaka
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H01 - BASIC ELECTRIC ELEMENTS
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Gas turbine and shroud for gas turbine
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Patent number 4,988,266
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Issue date Jan 29, 1991
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Hitachi, Ltd.
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Shigeyoshi Nakamura
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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