AU204681B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU204681B2
AU204681B2 AU13067/55A AU1306755A AU204681B2 AU 204681 B2 AU204681 B2 AU 204681B2 AU 13067/55 A AU13067/55 A AU 13067/55A AU 1306755 A AU1306755 A AU 1306755A AU 204681 B2 AU204681 B2 AU 204681B2
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
AU13067/55A
Other versions
AU1306755A (en
Inventor
Leslie Galvin John
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 AU204681B2 publication Critical patent/AU204681B2/en
Publication of AU1306755A publication Critical patent/AU1306755A/en
Expired legal-status Critical Current

Links

AU13067/55A 1955-10-21 Improvements in telephone systems Expired AU204681B2 (en)

Publications (2)

Publication Number Publication Date
AU204681B2 true AU204681B2 (en) 1956-04-26
AU1306755A AU1306755A (en) 1956-04-26

Family

ID=

Similar Documents

Publication Publication Date Title
AU207899B2 (en) Improvements in telephone systems
AU211197B2 (en) Improvements in telephone systems
AU205630B2 (en) Improvements in telephone systems
AU208819B2 (en) Improvements in telephone systems
AU204681B2 (en) Improvements in telephone systems
AU209625B2 (en) Improvements in telephone systems
AU202974B2 (en) Improvements in telephone systems
AU1228555A (en) Improvements in telephone systems
AU827555A (en) Improvements in telephone systems
AU768655A (en) Improvements in telephone systems
AU891755A (en) Improvements in telephone systems
AU1306755A (en) Improvements in telephone systems
AU1076755A (en) Improvements in telephone systems
AU1018755A (en) Improvements in telephone systems
AU211198B2 (en) Improvements in telecommunication systems
AU1018955A (en) Improvements in telecommunication systems
AU202560B2 (en) Improvements in automatic telephone systems
CA512311A (en) Telephone systems
CA510190A (en) Telephone systems
CA510665A (en) Telephone systems
CA511747A (en) Telephone systems
CA512309A (en) Telephone systems
CA512310A (en) Telephone systems
CA512083A (en) Telephone systems
CA512312A (en) Telephone systems