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AU456586B2 - Improvements in or relating to tone signalling apparatus - Google Patents
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AU456586B2 - Improvements in or relating to tone signalling apparatus - Google Patents

Improvements in or relating to tone signalling apparatus

Info

Publication number
AU456586B2
AU456586B2 AU23463/70A AU2346370A AU456586B2 AU 456586 B2 AU456586 B2 AU 456586B2 AU 23463/70 A AU23463/70 A AU 23463/70A AU 2346370 A AU2346370 A AU 2346370A AU 456586 B2 AU456586 B2 AU 456586B2
Authority
AU
Australia
Prior art keywords
relating
signalling apparatus
tone signalling
tone
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
AU23463/70A
Other versions
AU2346370A (en
Inventor
LEE HALE and CHARLES DAVID RAKES OTIS
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.)
Tarttelin Corp
Original Assignee
Tarttelin Corp
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 Tarttelin Corp filed Critical Tarttelin Corp
Application granted granted Critical
Publication of AU456586B2 publication Critical patent/AU456586B2/en
Publication of AU2346370A publication Critical patent/AU2346370A/en
Expired legal-status Critical Current

Links

AU23463/70A 1969-12-24 1970-12-16 Improvements in or relating to tone signalling apparatus Expired AU456586B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
USUS887,971 1969-12-24

Publications (2)

Publication Number Publication Date
AU456586B2 true AU456586B2 (en) 1972-06-22
AU2346370A AU2346370A (en) 1972-06-22

Family

ID=

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