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Umicore NV SA
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ACEC SA
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Application filed by ACEC SAfiledCriticalACEC SA
Publication of ES199322A1publicationCriticalpatent/ES199322A1/es
Field strength of radio waves in the 150-1500 kHz range that propagate to great distances from the transmitter(Radio wave field intensity in middle frequency range, determining propagation curves for large distances)
Wave and oscillatory phenomena in electron beams at microwave frequencies(Monograph on microwave frequency space-charge waves in electron beams including electron-wave oscillators, resonators and magnetrons)