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Electric screwdriver

  • US 5,856,731 A
  • Filed: 01/14/1997
  • Issued: 01/05/1999
  • Est. Priority Date: 10/05/1994
  • Status: Expired due to Term
First Claim
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1. An electric screwdriver comprising:

  • a universal motor;

    phase-gating controller means;

    first connection means connecting said phase-gating controller means and said universal motor;

    wave-packet controller means; and

    second connection means connecting said wave-packet controller means and said phase-gating controller means.

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