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H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
FR919488D1945-12-281945-12-28Système de contact en particulier pour disjoncteur à courant de forte intensité
ExpiredFR919488A
(fr)