AU1391828A - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU1391828A
AU1391828A AU13918/28A AU1391828A AU1391828A AU 1391828 A AU1391828 A AU 1391828A AU 13918/28 A AU13918/28 A AU 13918/28A AU 1391828 A AU1391828 A AU 1391828A AU 1391828 A AU1391828 A AU 1391828A
Authority
AU
Australia
Prior art keywords
telephone systems
telephone
systems
Prior art date
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
Application number
AU13918/28A
Filing date
Publication date
Application filed filed Critical
Publication of AU1391828A publication Critical patent/AU1391828A/en
Expired legal-status Critical Current

Links

AU13918/28A 1928-06-18 Improvements in telephone systems Expired AU1391828A (en)

Publications (1)

Publication Number Publication Date
AU1391828A true AU1391828A (en) 1929-05-28

Family

ID=

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