AU112373B2 - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU112373B2
AU112373B2 AU338/40A AU33840A AU112373B2 AU 112373 B2 AU112373 B2 AU 112373B2 AU 338/40 A AU338/40 A AU 338/40A AU 33840 A AU33840 A AU 33840A AU 112373 B2 AU112373 B2 AU 112373B2
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
AU338/40A
Other versions
AU33840A (en
Inventor
Harry Herrick Boswell
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 date
Application filed by Associated Electric Laboratories Inc filed Critical Associated Electric Laboratories Inc
Application granted granted Critical
Publication of AU112373B2 publication Critical patent/AU112373B2/en
Publication of AU33840A publication Critical patent/AU33840A/en
Expired legal-status Critical Current

Links

AU338/40A 1940-01-26 Improvements in telephone systems Expired AU112373B2 (en)

Publications (2)

Publication Number Publication Date
AU112373B2 true AU112373B2 (en) 1941-01-30
AU33840A AU33840A (en) 1941-01-30

Family

ID=

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