AU111702B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU111702B2
AU111702B2 AU4573/39A AU457339A AU111702B2 AU 111702 B2 AU111702 B2 AU 111702B2 AU 4573/39 A AU4573/39 A AU 4573/39A AU 457339 A AU457339 A AU 457339A AU 111702 B2 AU111702 B2 AU 111702B2
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
AU4573/39A
Other versions
AU457339A (en
Inventor
Ernest Lomax Clarence
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.)
X Associated Electric Laboratories Inc
Original Assignee
X Associated Electric Laboratories Inc
Filing date
Publication date
Application filed by X Associated Electric Laboratories Inc filed Critical X Associated Electric Laboratories Inc
Application granted granted Critical
Publication of AU111702B2 publication Critical patent/AU111702B2/en
Publication of AU457339A publication Critical patent/AU457339A/en
Expired legal-status Critical Current

Links

AU4573/39A 1939-10-05 Improvements in telephone systems Expired AU111702B2 (en)

Publications (2)

Publication Number Publication Date
AU111702B2 true AU111702B2 (en) 1940-10-24
AU457339A AU457339A (en) 1940-10-24

Family

ID=

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