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Application filed by Pleijel Henning Bernhard Mathi, Hermann Olsson AxelfiledCriticalPleijel Henning Bernhard Mathi
Publication of CH83196ApublicationCriticalpatent/CH83196A/de
CH83196A1914-11-041914-11-04Anordnung von Selbstinduktionsspulen zur Belastung von duplizierten Fernsprecgdoppelleitungen nach dem Pupinsystem
CH83196A
(de)