AU2868849A - Improvements in electrical signalling systems - Google Patents

Improvements in electrical signalling systems

Info

Publication number
AU2868849A
AU2868849A AU28688/49A AU2868849A AU2868849A AU 2868849 A AU2868849 A AU 2868849A AU 28688/49 A AU28688/49 A AU 28688/49A AU 2868849 A AU2868849 A AU 2868849A AU 2868849 A AU2868849 A AU 2868849A
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
AU28688/49A
Other versions
AU144569B2 (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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Filing date
Publication date
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Application granted granted Critical
Publication of AU2868849A publication Critical patent/AU2868849A/en
Publication of AU144569B2 publication Critical patent/AU144569B2/en
Expired legal-status Critical Current

Links

AU28688/49A 1949-07-12 Improvements in electrical signalling systems Expired AU144569B2 (en)

Publications (2)

Publication Number Publication Date
AU2868849A true AU2868849A (en) 1949-09-15
AU144569B2 AU144569B2 (en) 1949-09-15

Family

ID=

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