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GB915604A
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Improvements in systems for amplifying and demodulating modulated signals
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US3102969A
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Delay line structure for travelling wave amplifier tube consisting of strapped-together rings interleaved with strapped-together cylinders
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GB830482A
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Improvements in or relating to very high frequency radio communication systems
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ES214913A1
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A directional antenna device (Machine-translation by Google Translate, not legally binding)
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US2768297A
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Ultra-short wave oscillator
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US2682011A
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Multicellular velocity-modulated tube
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GB339149A
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Method of and apparatus for measuring at a distance the depth, temperature and salinity of sea water or other medium
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GB318901A
|
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Apparatus for measuring at a distance the depth, temperature and salinity of sea water or other medium
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CA478709A
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Processes of forming cathodes for electronic tubes
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