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Application filed by Gottfried TempelmannfiledCriticalGottfried Tempelmann
Publication of CH18958ApublicationCriticalpatent/CH18958A/de
CH18958A1899-03-101899-03-10Sicherheitsvorrichtung an elektrischen Luftleitungen für Schwachstrom, z. B. Telephon-und Telegraphenleitungen
CH18958A
(de)
Improvements in the Method of and Means for Preventing Undue Reciprocal Influences between Telephonic Lines, or between Telephonic and Telegraphic or other Electrical Lines.