AU140956B2 - Improvements in telephone signalling systems - Google Patents

Improvements in telephone signalling systems

Info

Publication number
AU140956B2
AU140956B2 AU10164/47A AU1016447A AU140956B2 AU 140956 B2 AU140956 B2 AU 140956B2 AU 10164/47 A AU10164/47 A AU 10164/47A AU 1016447 A AU1016447 A AU 1016447A AU 140956 B2 AU140956 B2 AU 140956B2
Authority
AU
Australia
Prior art keywords
signalling systems
telephone signalling
telephone
systems
signalling
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
AU10164/47A
Other versions
AU1016447A (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.)
PUNCH ENGINEERING PTY Ltd
Original Assignee
PUNCH ENGINEERING PTY Ltd
Filing date
Publication date
Application filed by PUNCH ENGINEERING PTY Ltd filed Critical PUNCH ENGINEERING PTY Ltd
Application granted granted Critical
Publication of AU1016447A publication Critical patent/AU1016447A/en
Publication of AU140956B2 publication Critical patent/AU140956B2/en
Expired legal-status Critical Current

Links

AU10164/47A 1947-02-25 Improvements in telephone signalling systems Expired AU140956B2 (en)

Publications (2)

Publication Number Publication Date
AU1016447A AU1016447A (en) 1948-01-22
AU140956B2 true AU140956B2 (en) 1948-01-22

Family

ID=

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