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AU157232B2 - Improvements in or relating to devices for use in automatic signalling systems for testing impedances - Google Patents

Improvements in or relating to devices for use in automatic signalling systems for testing impedances

Info

Publication number
AU157232B2
AU157232B2 AU5612/51A AU561251A AU157232B2 AU 157232 B2 AU157232 B2 AU 157232B2 AU 5612/51 A AU5612/51 A AU 5612/51A AU 561251 A AU561251 A AU 561251A AU 157232 B2 AU157232 B2 AU 157232B2
Authority
AU
Australia
Prior art keywords
relating
devices
signalling systems
automatic signalling
impedances
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
AU5612/51A
Other versions
AU561251A (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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of AU157232B2 publication Critical patent/AU157232B2/en
Publication of AU561251A publication Critical patent/AU561251A/en
Expired legal-status Critical Current

Links

AU5612/51A 1951-10-11 Improvements in or relating to devices for use in automatic signalling systems for testing impedances Expired AU157232B2 (en)

Publications (2)

Publication Number Publication Date
AU157232B2 true AU157232B2 (en) 1951-12-13
AU561251A AU561251A (en) 1951-12-13

Family

ID=

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