AU203143B2 - Improvements in and relating to electric signalling systems - Google Patents

Improvements in and relating to electric signalling systems

Info

Publication number
AU203143B2
AU203143B2 AU2045/54A AU204554A AU203143B2 AU 203143 B2 AU203143 B2 AU 203143B2 AU 2045/54 A AU2045/54 A AU 2045/54A AU 204554 A AU204554 A AU 204554A AU 203143 B2 AU203143 B2 AU 203143B2
Authority
AU
Australia
Prior art keywords
relating
signalling systems
electric signalling
electric
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
AU2045/54A
Other versions
AU204554A (en
Inventor
Otto Felix and Herbert Cyril Spencer Michael
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.)
British Telecommunications Research Ltd
Original Assignee
British Telecommunications Research Ltd
Filing date
Publication date
Application filed by British Telecommunications Research Ltd filed Critical British Telecommunications Research Ltd
Application granted granted Critical
Publication of AU203143B2 publication Critical patent/AU203143B2/en
Publication of AU204554A publication Critical patent/AU204554A/en
Expired legal-status Critical Current

Links

AU2045/54A 1954-07-29 Improvements in and relating to electric signalling systems Expired AU203143B2 (en)

Publications (2)

Publication Number Publication Date
AU203143B2 true AU203143B2 (en) 1955-02-03
AU204554A AU204554A (en) 1955-02-03

Family

ID=

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