AU215691B2 - Improvements relating to automatic telephone exchange systems - Google Patents

Improvements relating to automatic telephone exchange systems

Info

Publication number
AU215691B2
AU215691B2 AU24800/57A AU2480057A AU215691B2 AU 215691 B2 AU215691 B2 AU 215691B2 AU 24800/57 A AU24800/57 A AU 24800/57A AU 2480057 A AU2480057 A AU 2480057A AU 215691 B2 AU215691 B2 AU 215691B2
Authority
AU
Australia
Prior art keywords
telephone exchange
improvements relating
automatic telephone
exchange systems
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
AU24800/57A
Other versions
AU2480057A (en
Inventor
Sydney Hopkins Ronald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Edison Swan Ltd
Original Assignee
Siemens Edison Swan Ltd
Filing date
Publication date
Application filed by Siemens Edison Swan Ltd filed Critical Siemens Edison Swan Ltd
Application granted granted Critical
Publication of AU215691B2 publication Critical patent/AU215691B2/en
Publication of AU2480057A publication Critical patent/AU2480057A/en
Expired legal-status Critical Current

Links

AU24800/57A 1957-01-23 Improvements relating to automatic telephone exchange systems Expired AU215691B2 (en)

Publications (2)

Publication Number Publication Date
AU215691B2 true AU215691B2 (en) 1957-07-25
AU2480057A AU2480057A (en) 1957-07-25

Family

ID=

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