NL235237A - - Google Patents

Info

Publication number: NL235237A
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.)

1959-01-19

Publication of NL235237A publication Critical patent/NL235237A/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)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

NL235237D 1959-01-19 NL235237A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL1112554X		1959-01-19

Publications (1)

Publication Number	Publication Date
NL235237A true NL235237A (enrdf_load_html_response)

Family

ID=19869411

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
NL235237D NL235237A (enrdf_load_html_response)	1959-01-19
NL124925D NL124925C (enrdf_load_html_response)	1959-01-19

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
NL124925D NL124925C (enrdf_load_html_response)	1959-01-19

Country Status (2)

Country	Link
DE (1)	DE1112554B (enrdf_load_html_response)
NL (2)	NL124925C (enrdf_load_html_response)

0
- NL NL235237D patent/NL235237A/xx unknown
- NL NL124925D patent/NL124925C/xx active
1960
- 1960-01-16 DE DEJ17536A patent/DE1112554B/de active Pending

Also Published As

Publication number	Publication date
DE1112554B (de)	1961-08-10
NL124925C (enrdf_load_html_response)

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