AU212284B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU212284B2
AU212284B2 AU17561/56A AU1756156A AU212284B2 AU 212284 B2 AU212284 B2 AU 212284B2 AU 17561/56 A AU17561/56 A AU 17561/56A AU 1756156 A AU1756156 A AU 1756156A AU 212284 B2 AU212284 B2 AU 212284B2
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
AU17561/56A
Other versions
AU1756156A (en
Inventor
Halton Donald
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 AU1756156A publication Critical patent/AU1756156A/en
Publication of AU212284B2 publication Critical patent/AU212284B2/en
Expired legal-status Critical Current

Links

AU17561/56A 1956-04-18 Improvements in telephone systems Expired AU212284B2 (en)

Publications (2)

Publication Number Publication Date
AU1756156A AU1756156A (en) 1956-10-18
AU212284B2 true AU212284B2 (en) 1956-10-18

Family

ID=

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