AU140008B2 - Improvements in or relating to electrical signalling systems - Google Patents

Improvements in or relating to electrical signalling systems

Info

Publication number
AU140008B2
AU140008B2 AU12294/47A AU1229447A AU140008B2 AU 140008 B2 AU140008 B2 AU 140008B2 AU 12294/47 A AU12294/47 A AU 12294/47A AU 1229447 A AU1229447 A AU 1229447A AU 140008 B2 AU140008 B2 AU 140008B2
Authority
AU
Australia
Prior art keywords
relating
signalling systems
electrical signalling
electrical
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 - Lifetime
Application number
AU12294/47A
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Filing date
Publication of AU140008B2 publication Critical patent/AU140008B2/en
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

AU12294/47A 1947-05-23 Improvements in or relating to electrical signalling systems Expired - Lifetime AU140008B2 (en)

Publications (1)

Publication Number Publication Date
AU140008B2 true AU140008B2 (en)

Family

ID=

Similar Documents

Publication Publication Date Title
AU140008B2 (en) Improvements in or relating to electrical signalling systems
AU143835B2 (en) Improvements in or relating to electrical signalling systems
AU137437B2 (en) Improvements in or relating to electric signalling systems
AU137810B2 (en) Improvements in or relating to electric signalling systems
AU141304B2 (en) Improvements in or relating to electric signaling systems
AU1384747A (en) Improvements in or relating to electrical signalling systems
AU968747A (en) Improvements in or relating to electric signalling systems
AU968647A (en) Improvements in or relating to electric signalling systems
AU1239847A (en) Improvements in or relating to electric signaling systems
AU141012B2 (en) Improvements in or relating to electric signalling or control systems
AU129539B2 (en) Improvements in or relating to electrical signalling systems
AU140425B2 (en) Improvements in electric signalling systems
AU140365B2 (en) Improvements in or relating to signalling in telephone systems
AU142013B2 (en) Improvements in or relating to electric selecting systems
AU1412547A (en) Improvements in or relating to electric signalling or control systems
AU361146A (en) Improvements in or relating to electrical signalling systems
AU1501247A (en) Improvements in electric signalling systems
AU147172B2 (en) Improvements in or relating to telecommunication systems
AU1257047A (en) Improvements in or relating to signalling in telephone systems
AU143178B2 (en) Improvements in or relating to signalling over electric pulse communication systems
AU1412447A (en) Improvements in or relating to electric selecting systems
AU143721B2 (en) Improvements in or relating to long distance telecommunication systems
AU141168B2 (en) Improvements in or relating to electrical signalling systems
AU145386B2 (en) Improvements in or relating to electrical signalling systems
AU134329B2 (en) Improvements in or relating to electrical ignition systems