Patents Represented by Attorney H. Fredrik Hamann

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  • Method and apparatus for protecting alternating current circuits
    Patent number: 4271449
    Abstract: A method and apparatus is disclosed for protecting a circuit from excessive current flow by pulse width modulation of a current sense signal and interrupting the circuit when the width of the pulse is less than a reference period.
    Type: Grant
    Filed: April 4, 1979
    Date of Patent: June 2, 1981
    Assignee: Rockwell International Corporation
    Inventor: Martin L. Grogan