AU619712B - Improvements inthe working of telegraph and telephone circuits andthe like
- Google Patents
Improvements inthe working of telegraph and telephone circuits andthe like
Info
Publication number
AU619712B
AU619712BAU6197/12AAU619712AAU619712BAU 619712 BAU619712 BAU 619712BAU 6197/12 AAU6197/12 AAU 6197/12AAU 619712 AAU619712 AAU 619712AAU 619712 BAU619712 BAU 619712B
Authority
AU
Australia
Prior art keywords
telegraph
telephone circuits
improvements inthe
andthe
inthe working
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.)
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.)
Ernest Sydney Heartley
Original Assignee
Ernest Sydney Heartley
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 Ernest Sydney HeartleyfiledCriticalErnest Sydney Heartley
Priority to AU6197/12ApriorityCriticalpatent/AU619712B/en
Publication of AU619712ApublicationCriticalpatent/AU619712A/en
Publication of AU619712BpublicationCriticalpatent/AU619712B/en