NL7101521A - - Google Patents

Info

Publication number
NL7101521A
NL7101521A NL7101521A NL7101521A NL7101521A NL 7101521 A NL7101521 A NL 7101521A NL 7101521 A NL7101521 A NL 7101521A NL 7101521 A NL7101521 A NL 7101521A NL 7101521 A NL7101521 A NL 7101521A
Authority
NL
Netherlands
Application number
NL7101521A
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 filed Critical
Priority to NL7101521A priority Critical patent/NL7101521A/xx
Priority to DE19722201609 priority patent/DE2201609C3/en
Priority to GB489572A priority patent/GB1377021A/en
Priority to JP1143372A priority patent/JPS555752B1/ja
Priority to FR7203789A priority patent/FR2124484B1/fr
Publication of NL7101521A publication Critical patent/NL7101521A/xx

Links

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)
  • Noise Elimination (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
NL7101521A 1971-02-05 1971-02-05 NL7101521A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL7101521A NL7101521A (en) 1971-02-05 1971-02-05
DE19722201609 DE2201609C3 (en) 1971-02-05 1972-01-14 Signal receiver for receiving signals with different frequencies
GB489572A GB1377021A (en) 1971-02-05 1972-02-02 Signal receiver for receiving signals of different frequency
JP1143372A JPS555752B1 (en) 1971-02-05 1972-02-02
FR7203789A FR2124484B1 (en) 1971-02-05 1972-02-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7101521A NL7101521A (en) 1971-02-05 1971-02-05

Publications (1)

Publication Number Publication Date
NL7101521A true NL7101521A (en) 1972-08-08

Family

ID=19812409

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7101521A NL7101521A (en) 1971-02-05 1971-02-05

Country Status (5)

Country Link
JP (1) JPS555752B1 (en)
DE (1) DE2201609C3 (en)
FR (1) FR2124484B1 (en)
GB (1) GB1377021A (en)
NL (1) NL7101521A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE396684B (en) * 1976-02-09 1977-09-26 Ericsson Telefon Ab L M HALL CIRCUIT IN A RECEIVER DEVICE FOR MFC SIGNALING
SE397763B (en) * 1976-03-09 1977-11-14 Ericsson Telefon Ab L M RECEIVER DEVICE FOR SENSITIVE DETECTION OF ATMINSTONE TWO TONE FREQUENCIES IN AN INCOMING TONE SIGNAL
FR2373926A1 (en) * 1976-12-10 1978-07-07 Constr Telephoniques MULTI-FREQUENCY SIGNAL RECEIVER
DE3104138A1 (en) * 1981-02-06 1982-08-19 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg SUBSCRIBE CIRCUIT
DE3115151A1 (en) * 1981-04-15 1982-11-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit arrangement for evaluating AC signals formed from a plurality of simultaneously transmitted alternating currents with different signal frequencies, in telecommunications systems
JP6426812B1 (en) 2017-08-01 2018-11-21 株式会社多磨バイオ Medical seat
CN113970521B (en) * 2021-10-15 2023-09-26 中国南方电网有限责任公司超高压输电公司检修试验中心 Method and device for monitoring tapping switch oil sample

Also Published As

Publication number Publication date
FR2124484A1 (en) 1972-09-22
DE2201609C3 (en) 1979-03-22
DE2201609A1 (en) 1972-08-10
GB1377021A (en) 1974-12-11
JPS555752B1 (en) 1980-02-08
DE2201609B2 (en) 1978-06-29
FR2124484B1 (en) 1977-04-01

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Legal Events

Date Code Title Description
BI The patent application has been withdrawn