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AU123748B2 - Improvements in electrical signalling systems - Google Patents

Improvements in electrical signalling systems

Info

Publication number
AU123748B2
AU123748B2 AU13289/44A AU1328944A AU123748B2 AU 123748 B2 AU123748 B2 AU 123748B2 AU 13289/44 A AU13289/44 A AU 13289/44A AU 1328944 A AU1328944 A AU 1328944A AU 123748 B2 AU123748 B2 AU 123748B2
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
AU13289/44A
Other versions
AU1328944A (en
Inventor
Harry Herrick Roswell
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 Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
Filing date
Publication date
Application filed by Automatic Electric Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Application granted granted Critical
Publication of AU123748B2 publication Critical patent/AU123748B2/en
Publication of AU1328944A publication Critical patent/AU1328944A/en
Expired legal-status Critical Current

Links

AU13289/44A 1944-03-03 Improvements in electrical signalling systems Expired AU123748B2 (en)

Publications (2)

Publication Number Publication Date
AU123748B2 true AU123748B2 (en) 1947-03-20
AU1328944A AU1328944A (en) 1947-03-20

Family

ID=

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