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Knocking sensor
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Patent number 4,497,198
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Issue date Feb 5, 1985
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Matsushita Electric Industrial Co., Ltd.
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Juhei Takahashi
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G01 - MEASURING TESTING
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Knock sensor
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Patent number 4,307,602
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Issue date Dec 29, 1981
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Matsushita Electric Industrial Co., Ltd.
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Daisaku Sawada
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G01 - MEASURING TESTING
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Knock sensor
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Patent number 4,302,964
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Issue date Dec 1, 1981
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Matsushita Electric Industrial Co., Ltd.
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Daisaku Sawada
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G01 - MEASURING TESTING