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Hydrant lock
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Patent number 8,770,220
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Issue date Jul 8, 2014
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King Embry
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Hydrant lock
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Patent number 8,353,309
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Issue date Jan 15, 2013
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Joel Embry
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Fire hydrant locking device
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Patent number 6,994,106
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Issue date Feb 7, 2006
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Plasticsworks, Inc.
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Charles L. Hackley
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...