AU580706B - Improvements in selective signalling apparatus
- Google Patents
Improvements in selective signalling apparatus
Info
Publication number
AU580706B
AU580706BAU5807/06AAU580706AAU580706BAU 580706 BAU580706 BAU 580706BAU 5807/06 AAU5807/06 AAU 5807/06AAU 580706 AAU580706 AAU 580706AAU 580706 BAU580706 BAU 580706B
Authority
AU
Australia
Prior art keywords
signalling apparatus
selective signalling
selective
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.)
Ruthven Gill Electrician Parkhill Yonkers Westchester New York U Sa Edwin
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.)
INT TELEGRAPHIC CALL Co
Original Assignee
INT TELEGRAPHIC CALL Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by INT TELEGRAPHIC CALL CofiledCriticalINT TELEGRAPHIC CALL Co
Priority to AU5807/06ApriorityCriticalpatent/AU580706B/en
Publication of AU580706ApublicationCriticalpatent/AU580706A/en
Publication of AU580706BpublicationCriticalpatent/AU580706B/en