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Benjamin Duncan Oldfield

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  • Cheadle, EN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Damper apparatus
    • Patent number 3,964,331
    • Issue date Jun 22, 1976
    • Renold Limited
    • Benjamin Duncan Oldfield
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Sprag clutches
    • Patent number 3,937,310
    • Issue date Feb 10, 1976
    • Renold Limited
    • Benjamin Duncan Oldfield
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...