AU109149B2 - Improvements ina telephone system including a private automatic exchange - Google Patents

Improvements ina telephone system including a private automatic exchange

Info

Publication number
AU109149B2
AU109149B2 AU1103/39A AU110339A AU109149B2 AU 109149 B2 AU109149 B2 AU 109149B2 AU 1103/39 A AU1103/39 A AU 1103/39A AU 110339 A AU110339 A AU 110339A AU 109149 B2 AU109149 B2 AU 109149B2
Authority
AU
Australia
Prior art keywords
system including
telephone system
automatic exchange
private automatic
ina telephone
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
AU1103/39A
Other versions
AU110339A (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 AU109149B2 publication Critical patent/AU109149B2/en
Publication of AU110339A publication Critical patent/AU110339A/en
Expired legal-status Critical Current

Links

AU1103/39A 1939-03-14 Improvements ina telephone system including a private automatic exchange Expired AU109149B2 (en)

Publications (2)

Publication Number Publication Date
AU109149B2 true AU109149B2 (en) 1939-11-30
AU110339A AU110339A (en) 1939-11-30

Family

ID=

Similar Documents

Publication Publication Date Title
AU109149B2 (en) Improvements ina telephone system including a private automatic exchange
AU110339A (en) Improvements ina telephone system including a private automatic exchange
IE15996L (en) Telephone exchange system
CA381037A (en) Telephone system
CA381343A (en) Telephone system
CA384404A (en) Telephone system
CA379452A (en) Telephone system
CA379684A (en) Telephone system
CA379870A (en) Telephone system
CA380000A (en) Telephone system
CA380738A (en) Telephone system
CA380803A (en) Telephone system
CA379121A (en) Telephone system
CA381054A (en) Telephone system
CA383809A (en) Telephone system
CA382185A (en) Telephone system
CA383807A (en) Telephone system
CA383808A (en) Telephone system
CA379122A (en) Telephone system
CA383810A (en) Telephone system
CA383909A (en) Telephone system
CA379431A (en) Telephone system
CA385726A (en) Telephone system
IE15776L (en) Telephone exchange systems
CA385068A (en) Telephone transmission system