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Donald A. Sheff

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  • Mill Valley, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ergonomic bicycle handlebar and cycling systems
    • Patent number 11,919,601
    • Issue date Mar 5, 2024
    • CoEfficient Cycling LLC
    • Donald A. Sheff
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Ergonomic handlebar systems
    • Patent number 11,505,275
    • Issue date Nov 22, 2022
    • CoEfficient Cycling LLC
    • Don Sheff
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Cycling aero foil system
    • Patent number 11,198,323
    • Issue date Dec 14, 2021
    • CoEfficient Cycling LLC
    • Donald A. Sheff
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Ergonomic bicycle handlebar systems
    • Patent number 11,040,752
    • Issue date Jun 22, 2021
    • CoEfficient Cycling LLC
    • Don Sheff
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Coefficient ergonomic bicycle handlebar systems
    • Patent number 10,392,073
    • Issue date Aug 27, 2019
    • Don Sheff
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents