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DE737155C
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Device for regulating the pressure in the gas chambers of gas generating chambers arranged next to one another
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DE731617C
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Automatic control device
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DE736531C
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Automatic device for regulating physical and electrical quantities
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DE722863C
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Automatic control device
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DE737038C
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Device for monitoring explosive mixtures, in particular gas mixtures
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DE651596C
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System for the automatic regulation of the composition of flammable gas mixtures
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DE644792C
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Writing device for measuring devices
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DE733464C
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Depending on changes in state of physical quantities, device regulates automatically on constancy of the quantity
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DE496074C
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galvanometer
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DE528001C
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Equipment for restaurants or the like to control the time in which the service personnel come to the point from which the service signal is triggered
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DE647879C
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Square root extraction device for flow meter
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