AU323711A - Improvement in semiautomatic telephone exchange systems - Google Patents

Improvement in semiautomatic telephone exchange systems

Info

Publication number
AU323711A
AU323711A AU3237/11A AU323711A AU323711A AU 323711 A AU323711 A AU 323711A AU 3237/11 A AU3237/11 A AU 3237/11A AU 323711 A AU323711 A AU 323711A AU 323711 A AU323711 A AU 323711A
Authority
AU
Australia
Prior art keywords
improvement
telephone exchange
exchange systems
semiautomatic telephone
semiautomatic
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
AU3237/11A
Original Assignee
And
Filing date
Publication date
Application filed by And filed Critical And
Publication of AU323711A publication Critical patent/AU323711A/en
Expired legal-status Critical Current

Links

AU3237/11A 1911-12-01 Improvement in semiautomatic telephone exchange systems Expired AU323711A (en)

Publications (1)

Publication Number Publication Date
AU323711A true AU323711A (en) 1912-04-02

Family

ID=

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