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Hydro-turbine runner
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Patent number 6,533,536
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Issue date Mar 18, 2003
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Voith Hydro, Inc.
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Richard K. Fisher
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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Hydro-turbine runner
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Patent number 6,254,339
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Issue date Jul 3, 2001
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Voith Siemens Hydro Power Generation, Inc.
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Richard K. Fisher
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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Hydro-turbine runner
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Patent number 5,954,474
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Issue date Sep 21, 1999
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Voith Hydro, Inc.
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Richard K. Fisher
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...