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Cordell V. Castleman

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  • Bloomington, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ripple detecting polarity indicator for battery charger
    • Patent number 4,654,575
    • Issue date Mar 31, 1987
    • Cordell V. Castleman
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Battery charger
    • Patent number 4,647,834
    • Issue date Mar 3, 1987
    • Cordell V. Castleman
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Flash-wink generating circuit
    • Patent number 4,139,740
    • Issue date Feb 13, 1979
    • Magnetic Controls Company
    • Cordell V. Castleman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone testing equipment
    • Patent number 4,082,920
    • Issue date Apr 4, 1978
    • Magnetic Controls Company
    • Cordell V. Castleman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Ringing detector for telephone circuits
    • Patent number 4,046,970
    • Issue date Sep 6, 1977
    • Magnetic Controls Company
    • Cordell V. Castleman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE