IE19319L - Voice-frequency signalling apparatus. - Google Patents

Voice-frequency signalling apparatus.

Info

Publication number
IE19319L
IE19319L IE8248A IE8248A IE19319L IE 19319 L IE19319 L IE 19319L IE 8248 A IE8248 A IE 8248A IE 8248 A IE8248 A IE 8248A IE 19319 L IE19319 L IE 19319L
Authority
IE
Ireland
Prior art keywords
voice
signalling apparatus
frequency signalling
frequency
signalling
Prior art date
Application number
IE8248A
Original Assignee
Standard Telephones Cables Ltd
Thoams Frederick Stanley Hargreaves
William Frederick Gould
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 Standard Telephones Cables Ltd, Thoams Frederick Stanley Hargreaves, William Frederick Gould filed Critical Standard Telephones Cables Ltd
Priority to IE8248A priority Critical patent/IE19319L/en
Publication of IE19319L publication Critical patent/IE19319L/en

Links

IE8248A 1948-01-26 1948-01-26 Voice-frequency signalling apparatus. IE19319L (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IE8248A IE19319L (en) 1948-01-26 1948-01-26 Voice-frequency signalling apparatus.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE8248A IE19319L (en) 1948-01-26 1948-01-26 Voice-frequency signalling apparatus.

Publications (1)

Publication Number Publication Date
IE19319L true IE19319L (en) 1948-08-07

Family

ID=11006572

Family Applications (1)

Application Number Title Priority Date Filing Date
IE8248A IE19319L (en) 1948-01-26 1948-01-26 Voice-frequency signalling apparatus.

Country Status (1)

Country Link
IE (1) IE19319L (en)

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