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FABRICACIEN DE APARATOS ELECTR
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FABRICACIEN DE APARATOS ELECTR
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Priority to ES0299957ApriorityCriticalpatent/ES299957A3/es
Publication of ES299957A3publicationCriticalpatent/ES299957A3/es
Disposicion de circuito para valorar la condicion del bucley para diferenciar resistencias de bucle en una linea de te-lecomunicacion y mas particularmente en una linea telefoni- ca.