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GB0411587D0
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Programmer
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Valve and valve actuator
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GB9930566D0
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Valve control apparatus and method
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GB9906485D0
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Valve control,apparatus and method
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GB9828782D0
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Valve control apparatus and method
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Thermostat
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Controller
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GB8915058D0
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Improvements in fluid control valves
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Improvements in the mounting of energy regulators
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Improvements relating to the measurement of differential pressures
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Improvements relating to fluid-operated computing apparatus
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Improvements in and relating to thermally operated electric switch devices
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IE22620L
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Control system for fuel burners
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Improvements relating to the presentation and display of heat-exchanger gas activityinformation in graphite moderated power reactors
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Improvements in electrical control systems for fuel burners
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Improvements relating to electronic calculating apparatus
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Improvements in electric snap-action switches
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US2691129A
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Electrical control arrangement
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US2720598A
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Electrical control or regulating systems
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US2726300A
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Electrical energy regulators
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