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Fire hydrant with second valve
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Patent number 7,174,911
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Issue date Feb 13, 2007
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Davidson Hydrant Technologies, Inc.
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Thomas Dewey Davidson
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A62 - LIFE-SAVING FIRE-FIGHTING
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Fire hydrant with a second valve
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Patent number 7,055,544
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Issue date Jun 6, 2006
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Davidson Hydrant Technologies, Inc.
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Thomas Dewey Davidson
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A62 - LIFE-SAVING FIRE-FIGHTING
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Fire hydrant with second valve
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Patent number 6,868,860
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Issue date Mar 22, 2005
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Davidson Hydrant Technologies, Inc.
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Thomas Dewey Davidson
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A62 - LIFE-SAVING FIRE-FIGHTING