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schaltungsanordnung for the settlement of the speisestromes of dc powered fernspeisevorrichtungen of telecommunications, in particular, the fernsprechuebertragung serving cables in significantly changing erdmagnetischen fields due to magnetic or magnetic storms, hurricanes
schaltungsanordnung for the settlement of the speisestromes of dc powered fernspeisevorrichtungen of telecommunications, in particular, the fernsprechuebertragung serving cables in significantly changing erdmagnetischen fields due to magnetic or magnetic storms, hurricanes
