AU115006B2 - Telephone ringing systems - Google Patents

Telephone ringing systems

Info

Publication number
AU115006B2
AU115006B2 AU1111/41A AU111141A AU115006B2 AU 115006 B2 AU115006 B2 AU 115006B2 AU 1111/41 A AU1111/41 A AU 1111/41A AU 111141 A AU111141 A AU 111141A AU 115006 B2 AU115006 B2 AU 115006B2
Authority
AU
Australia
Prior art keywords
telephone ringing
ringing systems
systems
telephone
ringing
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
AU1111/41A
Other versions
AU111141A (en
Inventor
William Halligan. uf New York R. Sa Clair
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 AU115006B2 publication Critical patent/AU115006B2/en
Publication of AU111141A publication Critical patent/AU111141A/en
Expired legal-status Critical Current

Links

AU1111/41A 1941-04-17 Telephone ringing systems Expired AU115006B2 (en)

Publications (2)

Publication Number Publication Date
AU115006B2 true AU115006B2 (en) 1942-04-23
AU111141A AU111141A (en) 1942-04-23

Family

ID=

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