NL268829A - - Google Patents

Info

Publication number: NL268829A
Authority: NL; Netherlands

Application number

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.)

1960-10-03

Publication of NL268829A publication Critical patent/NL268829A/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

NL268829D 1960-10-03 NL268829A (cs)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US1195365XA	1960-10-03	1960-10-03
US5996260A	1960-10-03	1960-10-03

Publications (1)

Publication Number	Publication Date
NL268829A true NL268829A (cs)

Family

ID=26739408

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL268829D NL268829A (cs)	1960-10-03

Country Status (2)

Country	Link
DE (1)	DE1195365B (cs)
NL (1)	NL268829A (cs)

0
- NL NL268829D patent/NL268829A/xx unknown
1961
- 1961-09-11 DE DEW30678A patent/DE1195365B/de active Pending

Also Published As

Publication number	Publication date
DE1195365B (de)	1965-06-24

Publication	Publication Date	Title
AT219816B (cs)	1962-02-26
AT229076B (cs)	1963-08-26
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