AU730227A - Improvements in telephone systems - Google Patents

Improvements in telephone systems

Info

Publication number
AU730227A
AU730227A AU7302/27A AU730227A AU730227A AU 730227 A AU730227 A AU 730227A AU 7302/27 A AU7302/27 A AU 7302/27A AU 730227 A AU730227 A AU 730227A AU 730227 A AU730227 A AU 730227A
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
AU7302/27A
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
Publication of AU730227A publication Critical patent/AU730227A/en
Expired legal-status Critical Current

Links

AU7302/27A 1927-05-13 Improvements in telephone systems Expired AU730227A (en)

Publications (1)

Publication Number Publication Date
AU730227A true AU730227A (en) 1928-03-06

Family

ID=

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