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AU1856524A - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU1856524A
AU1856524A AU18565/24A AU1856524A AU1856524A AU 1856524 A AU1856524 A AU 1856524A AU 18565/24 A AU18565/24 A AU 18565/24A AU 1856524 A AU1856524 A AU 1856524A AU 1856524 A AU1856524 A AU 1856524A
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
AU18565/24A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of AU1856524A publication Critical patent/AU1856524A/en
Expired legal-status Critical Current

Links

AU18565/24A 1924-07-07 Improvements in telephone systems Expired AU1856524A (en)

Publications (1)

Publication Number Publication Date
AU1856524A true AU1856524A (en) 1925-02-13

Family

ID=

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