Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AgfiledCriticalSiemens Ag
Application grantedgrantedCritical
Publication of AT174954BpublicationCriticalpatent/AT174954B/en
AT174954D1949-02-161950-01-31
Circuit arrangement for the transmission of counter current surges via the speech wires of a connecting line.
AT174954B
(en)