AU204191B2 - Improvements in automatic and semiautomatic telephone systems - Google Patents

Improvements in automatic and semiautomatic telephone systems

Info

Publication number
AU204191B2
AU204191B2 AU2146/54A AU214654A AU204191B2 AU 204191 B2 AU204191 B2 AU 204191B2 AU 2146/54 A AU2146/54 A AU 2146/54A AU 214654 A AU214654 A AU 214654A AU 204191 B2 AU204191 B2 AU 204191B2
Authority
AU
Australia
Prior art keywords
automatic
telephone systems
semiautomatic telephone
semiautomatic
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
AU2146/54A
Other versions
AU214654A (en
Inventor
Edmund Beale Gilbert Jessop Beckett and John Leslie Galvin Charles
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 AU214654A publication Critical patent/AU214654A/en
Publication of AU204191B2 publication Critical patent/AU204191B2/en
Expired legal-status Critical Current

Links

AU2146/54A 1954-08-04 Improvements in automatic and semiautomatic telephone systems Expired AU204191B2 (en)

Publications (2)

Publication Number Publication Date
AU214654A AU214654A (en) 1955-02-10
AU204191B2 true AU204191B2 (en) 1955-02-10

Family

ID=

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