AU1832120A - Improvements in automatic telephone exchange systems - Google Patents

Improvements in automatic telephone exchange systems

Info

Publication number
AU1832120A
AU1832120A AU18321/20A AU1832120A AU1832120A AU 1832120 A AU1832120 A AU 1832120A AU 18321/20 A AU18321/20 A AU 18321/20A AU 1832120 A AU1832120 A AU 1832120A AU 1832120 A AU1832120 A AU 1832120A
Authority
AU
Australia
Prior art keywords
telephone exchange
automatic telephone
exchange systems
systems
automatic
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
AU18321/20A
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.)
Weston Electric Co Ltd
Original Assignee
Weston Electric Co Ltd
Filing date
Publication date
Application filed by Weston Electric Co Ltd filed Critical Weston Electric Co Ltd
Publication of AU1832120A publication Critical patent/AU1832120A/en
Expired legal-status Critical Current

Links

AU18321/20A 1920-10-20 Improvements in automatic telephone exchange systems Expired AU1832120A (en)

Publications (1)

Publication Number Publication Date
AU1832120A true AU1832120A (en) 1922-02-23

Family

ID=

Similar Documents

Publication Publication Date Title
AU1832120A (en) Improvements in automatic telephone exchange systems
CA198118A (en) Telephone exchange system
CA201287A (en) Telephone exchange system
CA197356A (en) Telephone exchange system
CA203582A (en) Telephone exchange system
CA206116A (en) Telephone exchange system
CA196962A (en) Telephone exchange system
CA196187A (en) Telephone exchange system
CA196183A (en) Telephone exchange system
CA196184A (en) Telephone exchange system
CA198119A (en) Telephone exchange system
CA200415A (en) Telephone exchange system
CA200074A (en) Telephone exchange system
CA196185A (en) Telephone exchange system
CA198357A (en) Telephone exchange system
CA200148A (en) Automatic telephone system
CA202284A (en) Automatic telephone system
CA203909A (en) Automatic telephone system
CA206367A (en) Automatic telephone system
AU1519520A (en) Improvements in or relating to automatic telephone systems
AU1518920A (en) Improvements in or relating to automatic telephone systems
AU1518820A (en) Improvements in or relating to automatic telephone systems
AU309126A (en) Improvements in telephone systems
AU1832220A (en) Improvements in telephone systems
AU1485920A (en) Improvements in or relating to automatic or semiautomatic telephone systems