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Norval Stapelfeld

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  • Nashua, NH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Animal control system having correction monitor
    • Patent number 8,006,649
    • Issue date Aug 30, 2011
    • Dogwatch Inc.
    • Norval Stapelfeld
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Adaptive pet containment system and method
    • Patent number 6,825,768
    • Issue date Nov 30, 2004
    • Dogwatch, Inc.
    • Norval Stapelfeld
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Animal control system
    • Patent number 6,575,120
    • Issue date Jun 10, 2003
    • Dogwatch Inc.
    • Norval Stapelfeld
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Animal control system
    • Patent number 6,467,435
    • Issue date Oct 22, 2002
    • Dogwatch Inc.
    • Norval Stapelfeld
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Animal control system
    • Patent number 6,360,698
    • Issue date Mar 26, 2002
    • Dogwatch Inc.
    • Norval Stapelfeld
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Animal training apparatus and method
    • Patent number 6,079,367
    • Issue date Jun 27, 2000
    • Dogwatch, Inc.
    • Norval D. Stapelfeld
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING

Patents Applicationslast 30 patents