AU137980B2 - Improvements relating to telephone systems - Google Patents

Improvements relating to telephone systems

Info

Publication number
AU137980B2
AU137980B2 AU13141/47A AU1314147A AU137980B2 AU 137980 B2 AU137980 B2 AU 137980B2 AU 13141/47 A AU13141/47 A AU 13141/47A AU 1314147 A AU1314147 A AU 1314147A AU 137980 B2 AU137980 B2 AU 137980B2
Authority
AU
Australia
Prior art keywords
improvements relating
telephone systems
telephone
relating
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
AU13141/47A
Other versions
AU1314147A (en
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and Co Ltd
Filing date
Publication date
Application filed by Siemens Brothers and Co Ltd filed Critical Siemens Brothers and Co Ltd
Application granted granted Critical
Publication of AU1314147A publication Critical patent/AU1314147A/en
Publication of AU137980B2 publication Critical patent/AU137980B2/en
Expired legal-status Critical Current

Links

AU13141/47A 1947-06-27 Improvements relating to telephone systems Expired AU137980B2 (en)

Publications (2)

Publication Number Publication Date
AU1314147A AU1314147A (en) 1947-08-28
AU137980B2 true AU137980B2 (en) 1947-08-28

Family

ID=

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