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AU2249329A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
AU2249329A
AU2249329A AU22493/29A AU2249329A AU2249329A AU 2249329 A AU2249329 A AU 2249329A AU 22493/29 A AU22493/29 A AU 22493/29A AU 2249329 A AU2249329 A AU 2249329A AU 2249329 A AU2249329 A AU 2249329A
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
AU22493/29A
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 AU2249329A publication Critical patent/AU2249329A/en
Expired legal-status Critical Current

Links

AU22493/29A 1929-09-17 Improvements in or relating to telephone systems Expired AU2249329A (en)

Publications (1)

Publication Number Publication Date
AU2249329A true AU2249329A (en) 1930-09-23

Family

ID=

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