AU1613820A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
AU1613820A
AU1613820A AU16138/20A AU1613820A AU1613820A AU 1613820 A AU1613820 A AU 1613820A AU 16138/20 A AU16138/20 A AU 16138/20A AU 1613820 A AU1613820 A AU 1613820A AU 1613820 A AU1613820 A AU 1613820A
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
AU16138/20A
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.)
Lipa Ponikowski
Original Assignee
Lipa Ponikowski
Filing date
Publication date
Application filed by Lipa Ponikowski filed Critical Lipa Ponikowski
Publication of AU1613820A publication Critical patent/AU1613820A/en
Expired legal-status Critical Current

Links

AU16138/20A 1920-06-17 Improvements in or relating to telephone systems Expired AU1613820A (en)

Publications (1)

Publication Number Publication Date
AU1613820A true AU1613820A (en) 1920-09-11

Family

ID=

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