AU154647B2 - Improvements in electrical signalling systems - Google Patents

Improvements in electrical signalling systems

Info

Publication number
AU154647B2
AU154647B2 AU347/51A AU34751A AU154647B2 AU 154647 B2 AU154647 B2 AU 154647B2 AU 347/51 A AU347/51 A AU 347/51A AU 34751 A AU34751 A AU 34751A AU 154647 B2 AU154647 B2 AU 154647B2
Authority
AU
Australia
Prior art keywords
signalling systems
electrical signalling
electrical
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
AU347/51A
Other versions
AU34751A (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.)
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 AU154647B2 publication Critical patent/AU154647B2/en
Publication of AU34751A publication Critical patent/AU34751A/en
Expired legal-status Critical Current

Links

AU347/51A 1951-01-19 Improvements in electrical signalling systems Expired AU154647B2 (en)

Publications (2)

Publication Number Publication Date
AU154647B2 true AU154647B2 (en) 1951-03-22
AU34751A AU34751A (en) 1951-03-22

Family

ID=

Similar Documents

Publication Publication Date Title
AU154647B2 (en) Improvements in electrical signalling systems
AU34751A (en) Improvements in electrical signalling systems
CA471737A (en) Electrical signalling systems
CA472663A (en) Electric signalling systems
CA478947A (en) Electric signalling systems
AU155682B2 (en) Improvements in or relating to electric signalling systems
CA476488A (en) Electrical impulse signalling systems
CA476521A (en) Electrical systems
CA475387A (en) Electrical systems
CA476108A (en) Electrical systems
CA471959A (en) Electrical systems
CA471973A (en) Electrical systems
CA473446A (en) Electrical systems
CA474043A (en) Electrical systems
CA474266A (en) Electrical systems
CA474436A (en) Electrical systems
CA477086A (en) Electrical systems
CA470549A (en) Electrical systems
CA471392A (en) Electrical systems
CA476553A (en) Electrical systems
CA471064A (en) Electrical systems
CA479126A (en) Electrical systems
AU157231B2 (en) Improvements in telecommunication systems
AU82951A (en) Improvements in or relating to electric signalling systems
CA477407A (en) Signalling systems