IE19401L - Voice-frequency signalling. - Google Patents

Voice-frequency signalling.

Info

Publication number
IE19401L
IE19401L IE45948A IE45948A IE19401L IE 19401 L IE19401 L IE 19401L IE 45948 A IE45948 A IE 45948A IE 45948 A IE45948 A IE 45948A IE 19401 L IE19401 L IE 19401L
Authority
IE
Ireland
Prior art keywords
voice
frequency signalling
signalling
frequency
Prior art date
Application number
IE45948A
Original Assignee
Standard Telephones Cables Ltd
Victor John Terry
Thomas 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, Victor John Terry, Thomas Frederick Stanley Hargreaves, William Frederick Gould filed Critical Standard Telephones Cables Ltd
Priority to IE45948A priority Critical patent/IE19401L/en
Publication of IE19401L publication Critical patent/IE19401L/en

Links

IE45948A 1948-06-28 1948-06-28 Voice-frequency signalling. IE19401L (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IE45948A IE19401L (en) 1948-06-28 1948-06-28 Voice-frequency signalling.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE45948A IE19401L (en) 1948-06-28 1948-06-28 Voice-frequency signalling.

Publications (1)

Publication Number Publication Date
IE19401L true IE19401L (en) 1949-01-09

Family

ID=11012921

Family Applications (1)

Application Number Title Priority Date Filing Date
IE45948A IE19401L (en) 1948-06-28 1948-06-28 Voice-frequency signalling.

Country Status (1)

Country Link
IE (1) IE19401L (en)

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