Type bar drive composed of two different components
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Circuit arrangement for the automatic switchover of the receiver from mono to stereo when receiving stereo programs broadcast according to the pilot tone method
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Method for producing a magnetic sound tape that can be used for teaching purposes, in particular language teaching purposes
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Circuit for tuning and automatic sharpening of electronically tunable oscillating circuits
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Circuit arrangement for frequency adjustment of an electronically tunable resonant circuit
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Improvements in or relating to positional controller apparatus
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Device for acoustic-optical teaching
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Device for controlling an electronic switch
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Device for magnetic recording or reproduction of high-frequency signals
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Circuit arrangement for influencing the switching state of a relay over a predetermined time
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Method and device for reducing the deviation of the video head from the recording track when scanning video magnetic tape recordings
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Arrangement for tuning television sets, in particular for tuning to VHF and UHF transmitters
