AU489539A - Improvements relating to telephone systems - Google Patents

Improvements relating to telephone systems

Info

Publication number
AU489539A
AU489539A AU4895/39A AU489539A AU489539A AU 489539 A AU489539 A AU 489539A AU 4895/39 A AU4895/39 A AU 4895/39A AU 489539 A AU489539 A AU 489539A AU 489539 A AU489539 A AU 489539A
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
AU4895/39A
Other versions
AU112648B2 (en
Inventor
Anthony Hensler Bernard
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 AU112648B2 publication Critical patent/AU112648B2/en
Publication of AU489539A publication Critical patent/AU489539A/en
Expired legal-status Critical Current

Links

AU4895/39A 1939-10-31 Improvements relating to telephone systems Expired AU112648B2 (en)

Publications (2)

Publication Number Publication Date
AU112648B2 AU112648B2 (en) 1941-03-13
AU489539A true AU489539A (en) 1941-03-13

Family

ID=

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