AU216847B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU216847B2
AU216847B2 AU27473/57A AU2747357A AU216847B2 AU 216847 B2 AU216847 B2 AU 216847B2 AU 27473/57 A AU27473/57 A AU 27473/57A AU 2747357 A AU2747357 A AU 2747357A AU 216847 B2 AU216847 B2 AU 216847B2
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
AU27473/57A
Other versions
AU2747357A (en
Inventor
Curtis and Peter Russell Robinson Gerald
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 AU216847B2 publication Critical patent/AU216847B2/en
Publication of AU2747357A publication Critical patent/AU2747357A/en
Expired legal-status Critical Current

Links

AU27473/57A 1957-05-02 Improvements in telephone systems Expired AU216847B2 (en)

Publications (2)

Publication Number Publication Date
AU216847B2 true AU216847B2 (en) 1957-11-07
AU2747357A AU2747357A (en) 1957-11-07

Family

ID=

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