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Automatic control system, by means of liquids, vapors and gases, or other, under pressure or other means of pressure, enabling an adjustment, such as the control at a pressure maxima fixed, at a pressure minima fixed, and to the intermediate pressures
Automatic control system, by means of liquids, vapors and gases, or other, under pressure or other means of pressure, enabling an adjustment, such as the control at a pressure maxima fixed, at a pressure minima fixed, and to the intermediate pressures
