AU121587B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU121587B2
AU121587B2 AU10155/43A AU1015543A AU121587B2 AU 121587 B2 AU121587 B2 AU 121587B2 AU 10155/43 A AU10155/43 A AU 10155/43A AU 1015543 A AU1015543 A AU 1015543A AU 121587 B2 AU121587 B2 AU 121587B2
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 - Lifetime
Application number
AU10155/43A
Inventor
Ellis Cstone John
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 of AU121587B2 publication Critical patent/AU121587B2/en
Application filed by Associated Electric Laboratories Inc filed Critical Associated Electric Laboratories Inc
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

AU10155/43A 1943-07-10 Improvements in telephone systems Expired - Lifetime AU121587B2 (en)

Publications (1)

Publication Number Publication Date
AU121587B2 true AU121587B2 (en)

Family

ID=

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