AU112999B2 - Improvements in responding devices for use in electrical signalling systems - Google Patents

Improvements in responding devices for use in electrical signalling systems

Info

Publication number
AU112999B2
AU112999B2 AU5664/39A AU566439A AU112999B2 AU 112999 B2 AU112999 B2 AU 112999B2 AU 5664/39 A AU5664/39 A AU 5664/39A AU 566439 A AU566439 A AU 566439A AU 112999 B2 AU112999 B2 AU 112999B2
Authority
AU
Australia
Prior art keywords
signalling systems
responding devices
electrical signalling
electrical
responding
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
AU5664/39A
Inventor
Norton Rushby Philip
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 AU112999B2 publication Critical patent/AU112999B2/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

AU5664/39A 1939-12-28 Improvements in responding devices for use in electrical signalling systems Expired - Lifetime AU112999B2 (en)

Publications (1)

Publication Number Publication Date
AU112999B2 true AU112999B2 (en)

Family

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