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Boris Efros

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  • Los Angeles, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wide power range bicycle with positive intuitive gear shifting system
    • Patent number 7,293,789
    • Issue date Nov 13, 2007
    • Boris Efros
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Wide powerful range bicycle
    • Patent number 4,666,174
    • Issue date May 19, 1987
    • Boris Efros
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    High speed cycle
    • Patent number 4,421,334
    • Issue date Dec 20, 1983
    • Boris Efros
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Efficient, versatile oscillating pedal cycle
    • Patent number 4,300,784
    • Issue date Nov 17, 1981
    • Energenic Propulsions, Ltd.
    • Boris Efros
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Powerful oscillating pedal bicycle
    • Patent number 4,272,096
    • Issue date Jun 9, 1981
    • Energenic Propulsions, Ltd.
    • Boris Efros
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Bicycle seat adjustable during ride
    • Patent number 4,226,435
    • Issue date Oct 7, 1980
    • Boris Efros
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Bicycle
    • Patent number 4,161,328
    • Issue date Jul 17, 1979
    • Boris Efros
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS