AU110997B2 - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
AU110997B2
AU110997B2 AU2520/39A AU252039A AU110997B2 AU 110997 B2 AU110997 B2 AU 110997B2 AU 2520/39 A AU2520/39 A AU 2520/39A AU 252039 A AU252039 A AU 252039A AU 110997 B2 AU110997 B2 AU 110997B2
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
AU2520/39A
Other versions
AU252039A (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.)
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 AU252039A publication Critical patent/AU252039A/en
Publication of AU110997B2 publication Critical patent/AU110997B2/en
Expired legal-status Critical Current

Links

AU2520/39A 1940-07-05 Improvements in or relating to telephone systems Expired AU110997B2 (en)

Publications (2)

Publication Number Publication Date
AU252039A AU252039A (en) 1940-07-18
AU110997B2 true AU110997B2 (en) 1940-07-18

Family

ID=

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