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Closed-case impact sprinklers
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Patent number 6,155,493
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Issue date Dec 5, 2000
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Virtual rain, Inc.
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Don Michael Kearby
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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Impact sprinkler unit
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Patent number 5,992,760
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Issue date Nov 30, 1999
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Virtual Rain, Inc.
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Don Michael Kearby
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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Sprinkler unit with flow stop
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Patent number 5,762,270
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Issue date Jun 9, 1998
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Hunter Industries Incorporated
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Don M. Kearby
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...