AU476512A - Improvements in and relating to telephone systems - Google Patents

Improvements in and relating to telephone systems

Info

Publication number
AU476512A
AU476512A AU4765/12A AU476512A AU476512A AU 476512 A AU476512 A AU 476512A AU 4765/12 A AU4765/12 A AU 4765/12A AU 476512 A AU476512 A AU 476512A AU 476512 A AU476512 A AU 476512A
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
AU4765/12A
Inventor
Electrical Engineers bothof Vanburen and Morgan Streets Chicago Illinois U. SA John George Blessing and Bernard Darwin Willis
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.)
Automatic Electric Co
Original Assignee
Automatic Electric Co
Publication date
Publication of AU476512A publication Critical patent/AU476512A/en
Expired legal-status Critical Current

Links

AU4765/12A Improvements in and relating to telephone systems Expired AU476512A (en)

Publications (1)

Publication Number Publication Date
AU476512A true AU476512A (en) 1913-08-05

Family

ID=

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