AU5521159A - Improvements in automatic signalling apparatus - Google Patents

Improvements in automatic signalling apparatus

Info

Publication number
AU5521159A
AU5521159A AU55211/59A AU5521159A AU5521159A AU 5521159 A AU5521159 A AU 5521159A AU 55211/59 A AU55211/59 A AU 55211/59A AU 5521159 A AU5521159 A AU 5521159A AU 5521159 A AU5521159 A AU 5521159A
Authority
AU
Australia
Prior art keywords
signalling apparatus
automatic signalling
automatic
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
AU55211/59A
Other versions
AU237341B2 (en
Inventor
Richard Paul Stonor Charles
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.)
Sound Diffusion Isales) Ltd
Original Assignee
Sound Diffusion Isales) Ltd
Filing date
Publication date
Application filed by Sound Diffusion Isales) Ltd filed Critical Sound Diffusion Isales) Ltd
Application granted granted Critical
Publication of AU5521159A publication Critical patent/AU5521159A/en
Publication of AU237341B2 publication Critical patent/AU237341B2/en
Expired legal-status Critical Current

Links

AU55211/59A 1959-12-01 Improvements in automatic signalling apparatus Expired AU237341B2 (en)

Publications (2)

Publication Number Publication Date
AU5521159A true AU5521159A (en) 1960-06-02
AU237341B2 AU237341B2 (en) 1960-06-02

Family

ID=

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