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GB454982A
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Improvements in or relating to flow proportioning means
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GB453441A
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Improvements in means for automatically regulating a physical condition
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GB264041A
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Apparatus for controlling the supply of air or auxiliary gas to gaseous fuels
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GB256523A
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Means for regulating the fuel supply to furnaces and the like
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GB253844A
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A device for controlling the quantity of air supplied to a furnace in dependence on the constitution of the waste products
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GB144304A
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Improvements in apparatus for regulating the volume of flow or pressure of fluids
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GB144283A
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Improvements in apparatus for regulating the volume of flow or pressure of fluids
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DE376864C
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Device for regulating the gas pressure for gas cleaning systems or the like.
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