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AU126206B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU126206B2
AU126206B2 AU19574/45A AU1957445A AU126206B2 AU 126206 B2 AU126206 B2 AU 126206B2 AU 19574/45 A AU19574/45 A AU 19574/45A AU 1957445 A AU1957445 A AU 1957445A AU 126206 B2 AU126206 B2 AU 126206B2
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
AU19574/45A
Other versions
AU1957445A (en
Inventor
Harry Herrick Roswell
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 Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
Filing date
Publication date
Application filed by Automatic Electric Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Application granted granted Critical
Publication of AU126206B2 publication Critical patent/AU126206B2/en
Publication of AU1957445A publication Critical patent/AU1957445A/en
Expired legal-status Critical Current

Links

AU19574/45A 1945-03-14 Improvements in telephone systems Expired AU126206B2 (en)

Publications (2)

Publication Number Publication Date
AU126206B2 true AU126206B2 (en) 1947-12-24
AU1957445A AU1957445A (en) 1947-12-24

Family

ID=

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