AU417980B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU417980B2
AU417980B2 AU25289/67A AU2528967A AU417980B2 AU 417980 B2 AU417980 B2 AU 417980B2 AU 25289/67 A AU25289/67 A AU 25289/67A AU 2528967 A AU2528967 A AU 2528967A AU 417980 B2 AU417980 B2 AU 417980B2
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
AU25289/67A
Other versions
AU2528967A (en
Inventor
Charles Curson Geoffrey
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 AU417980B2 publication Critical patent/AU417980B2/en
Publication of AU2528967A publication Critical patent/AU2528967A/en
Expired legal-status Critical Current

Links

AU25289/67A 1967-08-01 Improvements in telephone systems Expired AU417980B2 (en)

Publications (2)

Publication Number Publication Date
AU417980B2 true AU417980B2 (en) 1969-02-06
AU2528967A AU2528967A (en) 1969-02-06

Family

ID=

Similar Documents

Publication Publication Date Title
AU416338B2 (en) Improvements in irrigation systems
AU417980B2 (en) Improvements in telephone systems
AU2528967A (en) Improvements in telephone systems
AU418989B2 (en) Improvements in telephone switchboards
AU426948B2 (en) Improvements in lighting-control systems
AU412048B2 (en) Improvements in telephone systems
AU410270B2 (en) Improvements in or relating to telephone systems
AU3769868A (en) Improvements in lighting-control systems
AU1962967A (en) Improvements in telephone systems
AU405303B2 (en) Improvements in telecommunication systems
AU422223B2 (en) Improvements in automatic telephone systems
AU268866B2 (en) Improvements in automatic telephone systems
AU1891867A (en) Improvements in or relating to telephone systems
CA766330A (en) Telephone arrangement
AU402626B2 (en) Improvements in telephone switchboards
AU421726B2 (en) Improvements in or relating to telecommunications systems
AU423024B2 (en) Improvements in or relating to telecommunications systems
AU419546B2 (en) Improvements in transmission systems
AU430364B2 (en) Public telephone systems
AU427223B2 (en) Telephoning system
CA763025A (en) Limited capacity telephone system
CA753700A (en) Dial telephone systems
AU49466A (en) Improvements in telecommunication systems
AU374166A (en) Improvements in automatic telephone systems
AU2398867A (en) Improvements in automatic telephone systems