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Ronald I. Wallum

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  • Fargo, ND, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Stair climbing aid
    • Patent number 5,355,904
    • Issue date Oct 18, 1994
    • Ronald I. Wallum
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Half-step stability cane
    • Patent number 5,318,057
    • Issue date Jun 7, 1994
    • Ronald I. Wallum
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE