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Publication of GB161521ApublicationCriticalpatent/GB161521A/en
H04B15/00—Suppression or limitation of noise or interference
H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder