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AU154739B2 - Improvements relating to telephone systems - Google Patents

Improvements relating to telephone systems

Info

Publication number
AU154739B2
AU154739B2 AU2906/51A AU290651A AU154739B2 AU 154739 B2 AU154739 B2 AU 154739B2 AU 2906/51 A AU2906/51 A AU 2906/51A AU 290651 A AU290651 A AU 290651A AU 154739 B2 AU154739 B2 AU 154739B2
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
AU2906/51A
Other versions
AU290651A (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 AU290651A publication Critical patent/AU290651A/en
Publication of AU154739B2 publication Critical patent/AU154739B2/en
Expired legal-status Critical Current

Links

AU2906/51A 1951-05-30 Improvements relating to telephone systems Expired AU154739B2 (en)

Publications (2)

Publication Number Publication Date
AU290651A AU290651A (en) 1951-08-02
AU154739B2 true AU154739B2 (en) 1951-08-02

Family

ID=

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