AU1438923A - Improvements in signalling systems - Google Patents

Improvements in signalling systems

Info

Publication number
AU1438923A
AU1438923A AU14389/23A AU1438923A AU1438923A AU 1438923 A AU1438923 A AU 1438923A AU 14389/23 A AU14389/23 A AU 14389/23A AU 1438923 A AU1438923 A AU 1438923A AU 1438923 A AU1438923 A AU 1438923A
Authority
AU
Australia
Prior art keywords
signalling systems
signalling
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
AU14389/23A
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.)
WESTERN ELECTRIC Co Ltd
Original Assignee
WESTERN ELECTRIC Co Ltd
Filing date
Publication date
Application filed by WESTERN ELECTRIC Co Ltd filed Critical WESTERN ELECTRIC Co Ltd
Publication of AU1438923A publication Critical patent/AU1438923A/en
Expired legal-status Critical Current

Links

AU14389/23A 1923-09-17 Improvements in signalling systems Expired AU1438923A (en)

Publications (1)

Publication Number Publication Date
AU1438923A true AU1438923A (en) 1924-02-05

Family

ID=

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