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David E. Walker

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  • Mississauga, Ontario, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric motor drive system
    • Patent number 5,019,755
    • Issue date May 28, 1991
    • David E. Walker
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Two stage electric drive
    • Patent number 4,525,655
    • Issue date Jun 25, 1985
    • David E. Walker
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER