Arrangement for setting a receiver by means of pulses obtained by scanning
DE668172C
Device for setting a receiver by two drivers with opposing setting movements
DE694464C
Receiving device for the summation of simultaneously transmitted measured quantities
DE687305C
Method for the remote transmission of commands or signals by means of two pulse trains
DE663590C
Electromagnetic drive device
DE554252C
Device for keeping the light intensity of an electric light bulb constant
DE554220C
Device for remote transmission of measured quantities
DE604113C
Device for measuring the amount or speed of flowing media
DE556406C
Photoelectric switching device operated by alternating current, in which the photocurrent accumulated in a capacitor activates the switching element in series with it by ending a glow path
DE601260C
Photoelectric signal, control or measuring device
DE570896C
Device for the mechanical reproduction of measured quantities that are based on the appearance or disappearance of light or on the position of a light beam
DE509532C
Device for automatic control of processes depending on the time of day
DE474943C
Membrane for telephones and loudspeakers
DE469252C
Sofa, the backrests of which can be removed from the frame and can be inserted in an inverted position under other angles
