AU442940A - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU442940A
AU442940A AU4429/40A AU442940A AU442940A AU 442940 A AU442940 A AU 442940A AU 4429/40 A AU4429/40 A AU 4429/40A AU 442940 A AU442940 A AU 442940A AU 442940 A AU442940 A AU 442940A
Authority
AU
Australia
Prior art keywords
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
AU4429/40A
Other versions
AU119295B2 (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.)
Telephone Manufacturing Co Ltd
Original Assignee
Telephone Manufacturing Co Ltd
Filing date
Publication date
Application filed by Telephone Manufacturing Co Ltd filed Critical Telephone Manufacturing Co Ltd
Application granted granted Critical
Publication of AU119295B2 publication Critical patent/AU119295B2/en
Publication of AU442940A publication Critical patent/AU442940A/en
Expired legal-status Critical Current

Links

AU4429/40A 1940-12-28 Improvements in telephone systems Expired AU119295B2 (en)

Publications (2)

Publication Number Publication Date
AU119295B2 AU119295B2 (en) 1944-12-14
AU442940A true AU442940A (en) 1944-12-14

Family

ID=

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