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Pet training device
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Patent number 6,598,563
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Issue date Jul 29, 2003
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D.T. Systems, Inc.
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J. S. Kim
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Animal training system
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Patent number 6,167,843
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Issue date Jan 2, 2001
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J. S. Kim
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Electronic animal training system
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Patent number 5,605,116
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Issue date Feb 25, 1997
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D.T. Systems, Inc.
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J. S. Kim
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING