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Ronald C. Wisniewski

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  • Baltimore, MD, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Eyeglass holder
    • Patent number 5,408,728
    • Issue date Apr 25, 1995
    • Ronald Wisniewski
    • G02 - OPTICS
  • Information Patent Grant

    Eyeglass holder
    • Patent number 4,949,432
    • Issue date Aug 21, 1990
    • Ronald C. Wisniewski
    • A45 - HAND OR TRAVELLING ARTICLES