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Ultrasonic speaker and projector
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Patent number 8,009,846
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Issue date Aug 30, 2011
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Seiko Epson Corporation
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Hirokazu Sekino
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Projector
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Patent number 7,210,785
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Issue date May 1, 2007
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Seiko Epson Corporation
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Kinya Matsuzawa
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Brushless DC motor
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Patent number 6,166,470
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Issue date Dec 26, 2000
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Seiko Epson Corporation
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Hiroshi Miyazawa
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Brushless DC motor
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Patent number 5,952,760
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Issue date Sep 14, 1999
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Seiko Epson Corporation
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Hiroshi Miyazawa
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Brushless DC motor
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Patent number 5,808,390
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Issue date Sep 15, 1998
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Seiko Epson Corporation
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Hiroshi Miyazawa
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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