AU112235B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU112235B2
AU112235B2 AU5633/39A AU563339A AU112235B2 AU 112235 B2 AU112235 B2 AU 112235B2 AU 5633/39 A AU5633/39 A AU 5633/39A AU 563339 A AU563339 A AU 563339A AU 112235 B2 AU112235 B2 AU 112235B2
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
AU5633/39A
Other versions
AU563339A (en
Inventor
Binford Petersen Edward
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 Et Ectric Laboratories Inc
Original Assignee
Associated Et Ectric Laboratories Inc
Filing date
Publication date
Application filed by Associated Et Ectric Laboratories Inc filed Critical Associated Et Ectric Laboratories Inc
Application granted granted Critical
Publication of AU563339A publication Critical patent/AU563339A/en
Publication of AU112235B2 publication Critical patent/AU112235B2/en
Expired legal-status Critical Current

Links

AU5633/39A 1939-12-22 Improvements in telephone systems Expired AU112235B2 (en)

Publications (2)

Publication Number Publication Date
AU563339A AU563339A (en) 1941-01-09
AU112235B2 true AU112235B2 (en) 1941-01-09

Family

ID=

Similar Documents

Publication Publication Date Title
AU111702B2 (en) Improvements in telephone systems
AU112235B2 (en) Improvements in telephone systems
AU457339A (en) Improvements in telephone systems
AU563339A (en) Improvements in telephone systems
AU110812B2 (en) Improvements in telephone or like systems
AU112443B2 (en) Improvements in signalling arrangements for telephone systems
AU110772B2 (en) Improvements in or relating to telephone systems
AU110996B2 (en) Improvements in or relating to telephone systems
AU111391B2 (en) Improvements in or relating to telephone systems
AU111631B2 (en) Improvements in or relating to telephone systems
AU111894B2 (en) Improvements in or relating to telephone systems
AU112328B2 (en) Improvements in or relating to telephone systems
CA381054A (en) Telephone system
CA383909A (en) Telephone system
CA379431A (en) Telephone system
CA379452A (en) Telephone system
CA385726A (en) Telephone system
CA384404A (en) Telephone system
CA379684A (en) Telephone system
CA379870A (en) Telephone system
CA380000A (en) Telephone system
CA380738A (en) Telephone system
CA380803A (en) Telephone system
CA381037A (en) Telephone system
CA379121A (en) Telephone system