AU143835B2 - Improvements in or relating to electrical signalling systems - Google Patents

Improvements in or relating to electrical signalling systems

Info

Publication number
AU143835B2
AU143835B2 AU13847/47A AU1384747A AU143835B2 AU 143835 B2 AU143835 B2 AU 143835B2 AU 13847/47 A AU13847/47 A AU 13847/47A AU 1384747 A AU1384747 A AU 1384747A AU 143835 B2 AU143835 B2 AU 143835B2
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
Application number
AU13847/47A
Other versions
AU1384747A (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 AU1384747A publication Critical patent/AU1384747A/en
Publication of AU143835B2 publication Critical patent/AU143835B2/en
Expired legal-status Critical Current

Links

AU13847/47A 1947-07-23 Improvements in or relating to electrical signalling systems Expired AU143835B2 (en)

Publications (2)

Publication Number Publication Date
AU1384747A AU1384747A (en) 1947-08-21
AU143835B2 true AU143835B2 (en) 1947-08-21

Family

ID=

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