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GB914988A
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Improvements in or relating to storage water heaters
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GB925546A
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Improvements in or relating to water flow control valves in instantaneous water heaters
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GB953654A
|
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Improvements in or relating to automatic control valves for water heaters
|
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GB910415A
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Improvements in or relating to safety devices for hot water delivery apparatus
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GB900826A
|
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Improvements in or relating to gas fired instantaneous water heaters
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GB857648A
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Improvements in or relating to hot water systems
|
|
GB820462A
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Improvements in or relating to down draught diverters for the flue passages of gas fired water heaters
|
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GB827146A
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Improvements in or relating to instantaneous water heaters having thermostatically controlled gas valves
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GB844015A
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Improvements in or relating to gas valves for use with gas fired water heaters whichgas valves are controlled by water temperatures
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GB847356A
|
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Improvements in or relating to instantaneous gas fired water heaters
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GB847355A
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|
Improvements in or relating to hot water systems and water heaters for use therewith
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GB832191A
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Improvements in or relating to gas heated instantaneous water heaters
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GB783128A
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Improvements in or relating to thermostatically controlled gas fired water heaters
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|
GB758557A
|
|
Improvements in or relating to gas fired water heaters
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|
GB759401A
|
|
Improvements in or relating to gas fired water heaters
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|
GB745262A
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Improvements in or relating to water heaters for attachment to storage vessels
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GB747567A
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|
Improvements in or relating to gas fired water heaters
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GB736014A
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Improvements in or relating to water softening or scale reducing devices
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GB721382A
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|
Improvements in or relating to water heaters
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GB712647A
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Improvements in or relating to gas fired water heaters
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