AU4583159A - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU4583159A
AU4583159A AU45831/59A AU4583159A AU4583159A AU 4583159 A AU4583159 A AU 4583159A AU 45831/59 A AU45831/59 A AU 45831/59A AU 4583159 A AU4583159 A AU 4583159A AU 4583159 A AU4583159 A AU 4583159A
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
AU45831/59A
Other versions
AU231260B2 (en
Inventor
Davison and Leslie John Allen Alan
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 AU231260B2 publication Critical patent/AU231260B2/en
Publication of AU4583159A publication Critical patent/AU4583159A/en
Expired legal-status Critical Current

Links

AU45831/59A 1959-02-12 Improvements in telephone systems Expired AU231260B2 (en)

Publications (2)

Publication Number Publication Date
AU231260B2 AU231260B2 (en) 1959-08-13
AU4583159A true AU4583159A (en) 1959-08-13

Family

ID=

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