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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
FR49143D1938-02-091938-02-09Système démultiplicateur particulièrement applicable aux commandes d'organes de réglage de postes de t.s.f.
ExpiredFR49143E
(fr)