with convex friction surface

Patents Grantslast 30 patents

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    • Nidec-Shimpo Corporation
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    3631730

    • Patent number 3,631,730
    • Issue date Jan 4, 1972
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    3479891

    • Patent number 3,479,891
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