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H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
FR582738D1923-06-271924-06-14Dispositif à relais pour le contrôle d'installations électriques
ExpiredFR582738A
(fr)
Dispositif pour le réglage du courant de fonctionnement d'aimants à courant alternatif, notamment pour aimants interrupteurs de courant excessif, pour relais, etc.