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Water treatment apparatus
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Patent number 8,980,083
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Issue date Mar 17, 2015
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Hydro International PLC
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Keith Garry Hutchings
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E03 - WATER SUPPLY SEWERAGE
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Stormwater gully
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Patent number 8,623,204
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Issue date Jan 7, 2014
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Hydro International PLC
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Robert Yaw Gyamfi Andoh
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E03 - WATER SUPPLY SEWERAGE
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Vortex flow control device
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Patent number 8,555,924
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Issue date Oct 15, 2013
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Hydro International PLC
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Michael G. Faram
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Stormwater gully
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Patent number 8,480,887
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Issue date Jul 9, 2013
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Hydro International PLC
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Robert Yaw Gyamfi Andoh
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E03 - WATER SUPPLY SEWERAGE
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Vortex valve
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Patent number 7,814,935
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Issue date Oct 19, 2010
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Hydro International PLC
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Robert Y. G. Andoh
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Hydrodynamic treatment device
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Patent number 7,699,984
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Issue date Apr 20, 2010
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Hydro International PLC
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Robert Yaw Gyamfi Andoh
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Separator
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Patent number 7,344,636
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Issue date Mar 18, 2008
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Hydro International PLC
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Michael Guy Faram
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E03 - WATER SUPPLY SEWERAGE
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Overflow chamber
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Patent number 7,094,337
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Issue date Aug 22, 2006
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Hydro International PLC
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Christopher A. Williams
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E03 - WATER SUPPLY SEWERAGE
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Hydrodynamic vortex separator
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Patent number 6,730,222
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Issue date May 4, 2004
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Hydro International PLC
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Robert Yaw Gyamfi Andoh
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL