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Charles L. Youngberg

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  • Altadena, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Welding helmets with auxiliary optical vision systems
    • Patent number 4,523,808
    • Issue date Jun 18, 1985
    • Wilson Sales Company, Inc.
    • Charles G. Miller
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Sphere forming method and apparatus
    • Patent number 4,400,191
    • Issue date Aug 23, 1983
    • The United States of America as represented by the administrator of the Natio...
    • Charles L. Youngberg
    • C03 - GLASS MINERAL OR SLAG WOOL