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A device for displaying the flue signal in open gefa liquid state, in particular bath tubs, by means of current conducting, by means of the flue sig as a function of the closed position and an electrical betaetigender contacts
A device for displaying the flue signal in open gefa liquid state, in particular bath tubs, by means of current conducting, by means of the flue sig as a function of the closed position and an electrical betaetigender contacts