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Twist vibrator
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Patent number 5,581,143
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Issue date Dec 3, 1996
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Yamaichi Electronics Co., Ltd.
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Shinsuke Miura
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Piezoelectric actuator
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Patent number 5,410,207
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Issue date Apr 25, 1995
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Yamaichi Electronics Co., Ltd.
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Shinsuke Miura
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H01 - BASIC ELECTRIC ELEMENTS
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Viscometer
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Patent number 5,228,331
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Issue date Jul 20, 1993
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Yamaichi Electric Co., Inc.
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Tsutomu Odagiri
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G01 - MEASURING TESTING