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- Google Patents
AU408924B2 - Line searching network in multistage telecommunication, particularly telephone exchange systems
- Google Patents
Line searching network in multistage telecommunication, particularly telephone exchange systems
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
AU65029/65A
Inventor
Ulrich Friedrich
Filing date
Publication of AU408924B2publicationCriticalpatent/AU408924B2/en