AU111631B2 - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
AU111631B2
AU111631B2 AU3419/39A AU341939A AU111631B2 AU 111631 B2 AU111631 B2 AU 111631B2 AU 3419/39 A AU3419/39 A AU 3419/39A AU 341939 A AU341939 A AU 341939A AU 111631 B2 AU111631 B2 AU 111631B2
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
AU3419/39A
Other versions
AU341939A (en
Inventor
F. Crocker Thomas
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.)
Associated Electric Laboratories Inc
Original Assignee
Associated Electric Laboratories Inc
Filing date
Publication date
Application filed by Associated Electric Laboratories Inc filed Critical Associated Electric Laboratories Inc
Application granted granted Critical
Publication of AU111631B2 publication Critical patent/AU111631B2/en
Publication of AU341939A publication Critical patent/AU341939A/en
Expired legal-status Critical Current

Links

AU3419/39A 1939-07-25 Improvements in or relating to telephone systems Expired AU111631B2 (en)

Publications (2)

Publication Number Publication Date
AU111631B2 true AU111631B2 (en) 1940-10-10
AU341939A AU341939A (en) 1940-10-10

Family

ID=

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