AU3093657A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
AU3093657A
AU3093657A AU30936/57A AU3093657A AU3093657A AU 3093657 A AU3093657 A AU 3093657A AU 30936/57 A AU30936/57 A AU 30936/57A AU 3093657 A AU3093657 A AU 3093657A AU 3093657 A AU3093657 A AU 3093657A
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
AU30936/57A
Other versions
AU220239B2 (en
Inventor
Charles Corner and Herbert Cyril Spencer Arthur
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.)
British Telecommunications Research Ltd
Original Assignee
British Telecommunications Research Ltd
Filing date
Publication date
Application filed by British Telecommunications Research Ltd filed Critical British Telecommunications Research Ltd
Application granted granted Critical
Publication of AU220239B2 publication Critical patent/AU220239B2/en
Publication of AU3093657A publication Critical patent/AU3093657A/en
Expired legal-status Critical Current

Links

AU30936/57A 1957-09-04 Improvements in or relating to telephone systems Expired AU220239B2 (en)

Publications (2)

Publication Number Publication Date
AU220239B2 AU220239B2 (en) 1958-03-06
AU3093657A true AU3093657A (en) 1958-03-06

Family

ID=

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