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AU219986B2 - Improvements relating to telephone systems - Google Patents
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AU219986B2 - Improvements relating to telephone systems - Google Patents

Improvements relating to telephone systems

Info

Publication number
AU219986B2
AU219986B2 AU27064/57A AU2706457A AU219986B2 AU 219986 B2 AU219986 B2 AU 219986B2 AU 27064/57 A AU27064/57 A AU 27064/57A AU 2706457 A AU2706457 A AU 2706457A AU 219986 B2 AU219986 B2 AU 219986B2
Authority
AU
Australia
Prior art keywords
improvements relating
telephone systems
telephone
relating
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
AU27064/57A
Other versions
AU2706457A (en
Inventor
Allen Stallworth Frank
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 AU219986B2 publication Critical patent/AU219986B2/en
Publication of AU2706457A publication Critical patent/AU2706457A/en
Expired legal-status Critical Current

Links

AU27064/57A 1957-04-15 Improvements relating to telephone systems Expired AU219986B2 (en)

Publications (2)

Publication Number Publication Date
AU219986B2 true AU219986B2 (en) 1957-10-17
AU2706457A AU2706457A (en) 1957-10-17

Family

ID=

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