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Publication of FR647984ApublicationCriticalpatent/FR647984A/fr
H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter
FR647984D1928-01-281928-01-28Radio-récepteur sans commutateur
ExpiredFR647984A
(fr)