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GB996469A
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An electric regulator for controlling variables such as temperature
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GB723515A
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Improvement in recording instrument
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GB723460A
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A device for controlling the operations of a measuring instrument
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GB673143A
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Improvements in means for measuring and regulating the flow of a fluid
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GB671734A
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Improvements in or relating to electric circuits
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GB641711A
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Method and arrangements for regulating the pressure, more particularly in thermic machinery and apparatus employing said method
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