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Audio FM transmitter
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Patent number 9,602,053
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Issue date Mar 21, 2017
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Circuit Design, Inc.
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Yukinaga Koike
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H03 - BASIC ELECTRONIC CIRCUITRY
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Periphery monitoring system
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Patent number 7,333,048
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Issue date Feb 19, 2008
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Mazda Motor Corporation
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Makoto Nakagawa
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B60 - VEHICLES IN GENERAL
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Wireless microphone
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Patent number D449041
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Issue date Oct 9, 2001
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Circuit Design, Inc.
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Yukinaga Koike
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D14 - Recording, communication, or information retrieval equipment
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Wireless transmitter for microphone
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Patent number D442932
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Issue date May 29, 2001
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Circuit Design, Inc.
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Yukinaga Koike
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D14 - Recording, communication, or information retrieval equipment
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