Fixed capacitor for high-frequency devices, especially for portable radio systems, e.g. B. artificial antennas
DE717583C
Measuring device for resistance and capacitance measurements with a tube generator, to whose grid the size to be measured is connected and in whose anode circuit the display instrument is located
GB432789A
Improvements in and relating to light-controlled optical systems
DE720632C
Light signal device
DE733885C
Coil set for radio sets
GB391411A
Improvements in and relating to wireless heterodyne reception
GB398704A
Improvements in and relating to low frequency amplifiers of radio receivers
