AU213260B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU213260B2
AU213260B2 AU15820/56A AU1582056A AU213260B2 AU 213260 B2 AU213260 B2 AU 213260B2 AU 15820/56 A AU15820/56 A AU 15820/56A AU 1582056 A AU1582056 A AU 1582056A AU 213260 B2 AU213260 B2 AU 213260B2
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
AU15820/56A
Other versions
AU1582056A (en
Inventor
Devenish Allum and Gordon William Helsby Robin
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Filing date
Publication date
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Application granted granted Critical
Publication of AU213260B2 publication Critical patent/AU213260B2/en
Publication of AU1582056A publication Critical patent/AU1582056A/en
Expired legal-status Critical Current

Links

AU15820/56A 1956-02-09 Improvements in telephone systems Expired AU213260B2 (en)

Publications (2)

Publication Number Publication Date
AU213260B2 true AU213260B2 (en) 1956-08-09
AU1582056A AU1582056A (en) 1956-08-09

Family

ID=

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