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Application filed by Bbc Brown Boveri & CiefiledCriticalBbc Brown Boveri & Cie
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Publication of AT167995BpublicationCriticalpatent/AT167995B/de
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
H01H47/002—Monitoring or fail-safe circuits
AT167995D1949-01-201949-06-18Einrichtung zum dauernden Überwachen der Kontakteinstellung an den Kontakten von Kontaktstromrichtern
AT167995B
(de)