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Ultrasound signal processor
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Patent number 5,515,727
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Issue date May 14, 1996
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Hitachi Medical Corporation
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Yuichi Miwa
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Ultrasonic doppler flow meter
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Patent number 4,905,206
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Issue date Feb 27, 1990
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Hitachi Medical Corporation
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Hisashi Nishiyama
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G01 - MEASURING TESTING
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Ultrasonic doppler meter
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Patent number 4,884,448
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Issue date Dec 5, 1989
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Hitachi Medical Corporation
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Toshio Ogawa
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G01 - MEASURING TESTING
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Ultrasonic velocity meter
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Patent number 4,751,847
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Issue date Jun 21, 1988
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Hitachi Medical Corp.
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Kageyoshi Katakura
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G01 - MEASURING TESTING