AU1175228A - Improvements in and relating to telephone systems - Google Patents

Improvements in and relating to telephone systems

Info

Publication number
AU1175228A
AU1175228A AU11752/28A AU1175228A AU1175228A AU 1175228 A AU1175228 A AU 1175228A AU 11752/28 A AU11752/28 A AU 11752/28A AU 1175228 A AU1175228 A AU 1175228A AU 1175228 A AU1175228 A AU 1175228A
Authority
AU
Australia
Prior art keywords
relating
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
AU11752/28A
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
Filing date
Publication date
Application filed by Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Publication of AU1175228A publication Critical patent/AU1175228A/en
Expired legal-status Critical Current

Links

AU11752/28A 1928-11-20 Improvements in and relating to telephone systems Expired AU1175228A (en)

Publications (1)

Publication Number Publication Date
AU1175228A true AU1175228A (en) 1928-12-04

Family

ID=

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