DK93300C - Telefonapparat med tastatur og indrettet for tonefrekvent ciffersending. - Google Patents

Telefonapparat med tastatur og indrettet for tonefrekvent ciffersending.

Info

Publication number
DK93300C
DK93300C DK257158A DK257158A DK93300C DK 93300 C DK93300 C DK 93300C DK 257158 A DK257158 A DK 257158A DK 257158 A DK257158 A DK 257158A DK 93300 C DK93300 C DK 93300C
Authority
DK
Denmark
Prior art keywords
keypad
tone
telephone
digit transmission
frequency digit
Prior art date
Application number
DK257158A
Other languages
English (en)
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of DK93300C publication Critical patent/DK93300C/da

Links

DK257158A 1957-07-12 1958-07-11 Telefonapparat med tastatur og indrettet for tonefrekvent ciffersending. DK93300C (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE93300X 1957-07-12

Publications (1)

Publication Number Publication Date
DK93300C true DK93300C (da) 1962-04-30

Family

ID=20276412

Family Applications (1)

Application Number Title Priority Date Filing Date
DK257158A DK93300C (da) 1957-07-12 1958-07-11 Telefonapparat med tastatur og indrettet for tonefrekvent ciffersending.

Country Status (1)

Country Link
DK (1) DK93300C (da)

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