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Publication of FR669285ApublicationCriticalpatent/FR669285A/fr
H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
H03J1/14—Special arrangements for fine and coarse tuning
FR669285D1929-02-071929-02-07Tambour indicateur à démultiplication pour réglage de condensateur d'appareil de télégraphie sans fil
ExpiredFR669285A
(fr)