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Non-frequency-selective reflectometer, Carl G Sontheimer and Nathaniel I Korman, RCA Delaware. US Pat # 2423416 Jul 1 1947, application Mar 30 1944. Fixed-position wire-loop current / voltage probe analysed as a bridge. Derivation of conditions for frequency independence of balance point. |
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Refs Cited: USP 2365207 Moles 1944. |
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