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Piezoelectric oscillator unit
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Patent number 6,819,191
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Issue date Nov 16, 2004
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Murata Manufacturing Co., Ltd.
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Toshikazu Funahara
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Piezoelectric oscillator
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Patent number 6,380,662
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Issue date Apr 30, 2002
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Murata Manufacturing Co., Ltd.
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Toshikazu Funahara
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H03 - BASIC ELECTRONIC CIRCUITRY
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Active filter
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Patent number 4,275,357
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Issue date Jun 23, 1981
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Murata Manufacturing Co., Ltd.
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Fumio Nakayama
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H03 - BASIC ELECTRONIC CIRCUITRY