AU303931A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
AU303931A
AU303931A AU3039/31A AU303931A AU303931A AU 303931 A AU303931 A AU 303931A AU 3039/31 A AU3039/31 A AU 3039/31A AU 303931 A AU303931 A AU 303931A AU 303931 A AU303931 A AU 303931A
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
AU3039/31A
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 AU303931A publication Critical patent/AU303931A/en
Expired legal-status Critical Current

Links

AU3039/31A 1931-07-13 Improvements in or relating to telephone systems Expired AU303931A (en)

Publications (1)

Publication Number Publication Date
AU303931A true AU303931A (en) 1932-08-25

Family

ID=

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