the gearing is not described or not essential

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    3076350

    • Patent number 3,076,350
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    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    2680969

    • Patent number 2,680,969
    • Issue date Jun 15, 1954
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    2681220

    • Patent number 2,681,220
    • Issue date Jun 15, 1954
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    2673907

    • Patent number 2,673,907
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    2526375

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    2251213

    • Patent number 2,251,213
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    2220996

    • Patent number 2,220,996
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    2043783

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