AU119657B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU119657B2
AU119657B2 AU15493/44A AU1549344A AU119657B2 AU 119657 B2 AU119657 B2 AU 119657B2 AU 15493/44 A AU15493/44 A AU 15493/44A AU 1549344 A AU1549344 A AU 1549344A AU 119657 B2 AU119657 B2 AU 119657B2
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
AU15493/44A
Other versions
AU1549344A (en
Inventor
Ellis Cstone John
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
Filing date
Publication date
Application filed by Automatic Electric Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Application granted granted Critical
Publication of AU1549344A publication Critical patent/AU1549344A/en
Publication of AU119657B2 publication Critical patent/AU119657B2/en
Expired legal-status Critical Current

Links

AU15493/44A 1943-01-28 Improvements in telephone systems Expired AU119657B2 (en)

Publications (2)

Publication Number Publication Date
AU1549344A AU1549344A (en) 1945-03-15
AU119657B2 true AU119657B2 (en) 1945-03-15

Family

ID=

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