AU546822A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
AU546822A
AU546822A AU5468/22A AU546822A AU546822A AU 546822 A AU546822 A AU 546822A AU 5468/22 A AU5468/22 A AU 5468/22A AU 546822 A AU546822 A AU 546822A AU 546822 A AU546822 A AU 546822A
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
AU5468/22A
Inventor
Engineer LOOI West Vanburen Streed Chicago III. U. SA Arthur Jay Kay
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
Filing date
Publication date
Application filed by Automatic Electric Co filed Critical Automatic Electric Co
Publication of AU546822A publication Critical patent/AU546822A/en
Expired legal-status Critical Current

Links

AU5468/22A 1922-02-02 Improvements in or relating to telephone systems Expired AU546822A (en)

Publications (1)

Publication Number Publication Date
AU546822A true AU546822A (en) 1922-06-01

Family

ID=

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