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AU159964B2 - Improvements in or relating to voice frequency switching devices - Google Patents
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AU159964B2 - Improvements in or relating to voice frequency switching devices - Google Patents

Improvements in or relating to voice frequency switching devices

Info

Publication number
AU159964B2
AU159964B2 AU6309/51A AU630951A AU159964B2 AU 159964 B2 AU159964 B2 AU 159964B2 AU 6309/51 A AU6309/51 A AU 6309/51A AU 630951 A AU630951 A AU 630951A AU 159964 B2 AU159964 B2 AU 159964B2
Authority
AU
Australia
Prior art keywords
relating
switching devices
frequency switching
voice frequency
voice
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
AU6309/51A
Other versions
AU630951A (en
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.)
Nokia Services Ltd
Original Assignee
Standard Telephone and Cables Pty Ltd
Filing date
Publication date
Application filed by Standard Telephone and Cables Pty Ltd filed Critical Standard Telephone and Cables Pty Ltd
Application granted granted Critical
Publication of AU159964B2 publication Critical patent/AU159964B2/en
Publication of AU630951A publication Critical patent/AU630951A/en
Expired legal-status Critical Current

Links

AU6309/51A 1951-11-15 Improvements in or relating to voice frequency switching devices Expired AU159964B2 (en)

Publications (2)

Publication Number Publication Date
AU159964B2 true AU159964B2 (en) 1952-01-17
AU630951A AU630951A (en) 1952-01-17

Family

ID=

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