using mechanical detecting means

Patents Grantslast 30 patents

  • Information Patent Grant

    Light monitoring circuit for a manual to automatic turntable conver...

    • Patent number 10,607,634
    • Issue date Mar 31, 2020
    • Thomas G. Lavoie
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  • Information Patent Grant

    Linear tracking arm drive apparatus

    • Patent number 4,453,243
    • Issue date Jun 5, 1984
    • Sony Corporation
    • Naoki Tanaka
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    Tonearm linear-drive apparatus

    • Patent number 3,940,149
    • Issue date Feb 24, 1976
    • Fumitaka Nagamura
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  • Information Patent Grant

    3870320

    • Patent number 3,870,320
    • Issue date Mar 11, 1975
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  • Information Patent Grant

    3540739

    • Patent number 3,540,739
    • Issue date Nov 17, 1970
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  • Information Patent Grant

    3425701

    • Patent number 3,425,701
    • Issue date Feb 4, 1969
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  • Information Patent Grant

    3409303

    • Patent number 3,409,303
    • Issue date Nov 5, 1968
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  • Information Patent Grant

    3129946

    • Patent number 3,129,946
    • Issue date Apr 21, 1964
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