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GB507976A
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Improvements in and relating to mechanical chain grate stokers
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GB329891A
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Improvements in travelling grates
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GB292859A
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Differential pressure gauge
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US1650060A
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Differential-pressure meter
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GB237892A
|
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Improvements in differential pressure gauges particularly applicable for use with fluid meters
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DE396336C
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Control device for wind turbine drives
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DE403776C
|
|
Control device for wind turbine drive
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US1521669A
|
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Method and apparatus for automatically regulating the grate speed in furnaces with traveling or chain grates
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US1464596A
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Pressure-regulating device for intermediate steam-withdrawal installations
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GB163268A
|
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Method of and apparatus for automatically regulating the gratespeed in furnaces with travelling or chain grates
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GB157970A
|
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Pressure regulating device for intermediate steam-withdrawal installations
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|
GB157865A
|
|
Method of and means for regulating an electric central station and sub-station
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DE349421C
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Control device for wind turbine drives
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