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AU210920B2 - Improvements in or relating to telephone signalling systems - Google Patents
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AU210920B2 - Improvements in or relating to telephone signalling systems - Google Patents

Improvements in or relating to telephone signalling systems

Info

Publication number
AU210920B2
AU210920B2 AU15171/56A AU1517156A AU210920B2 AU 210920 B2 AU210920 B2 AU 210920B2 AU 15171/56 A AU15171/56 A AU 15171/56A AU 1517156 A AU1517156 A AU 1517156A AU 210920 B2 AU210920 B2 AU 210920B2
Authority
AU
Australia
Prior art keywords
relating
signalling systems
telephone signalling
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
AU15171/56A
Other versions
AU1517156A (en
Inventor
Spence Leman Hugh
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.)
Nokia Services Ltd
Original Assignee
Standard Telephone and Cables Pty Ltd
Filing date
Publication date
Application filed by Standard Telephone and Cables Pty Ltd filed Critical Standard Telephone and Cables Pty Ltd
Application granted granted Critical
Publication of AU1517156A publication Critical patent/AU1517156A/en
Publication of AU210920B2 publication Critical patent/AU210920B2/en
Expired legal-status Critical Current

Links

AU15171/56A 1956-01-13 Improvements in or relating to telephone signalling systems Expired AU210920B2 (en)

Publications (2)

Publication Number Publication Date
AU1517156A AU1517156A (en) 1956-07-19
AU210920B2 true AU210920B2 (en) 1956-07-19

Family

ID=

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