AU205275B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU205275B2
AU205275B2 AU2013/54A AU201354A AU205275B2 AU 205275 B2 AU205275 B2 AU 205275B2 AU 2013/54 A AU2013/54 A AU 2013/54A AU 201354 A AU201354 A AU 201354A AU 205275 B2 AU205275 B2 AU 205275B2
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 - Lifetime
Application number
AU2013/54A
Inventor
James Frederick Denby and Alan Heathcote James Gordon Pearce
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 of AU205275B2 publication Critical patent/AU205275B2/en
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

AU2013/54A 1954-07-29 Improvements in telephone systems Expired - Lifetime AU205275B2 (en)

Publications (1)

Publication Number Publication Date
AU205275B2 true AU205275B2 (en)

Family

ID=

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