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Individual
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Priority to ES85502ApriorityCriticalpatent/ES85502A1/es
Publication of ES85502A1publicationCriticalpatent/ES85502A1/es
ES85502A1923-05-161923-05-16Disposición de conexiones para transformadores de multiplicación de frecuencia, especialmente para la radiotécnica.
ExpiredES85502A1
(es)