NL6617451A - - Google Patents

Info

Publication number
NL6617451A
NL6617451A NL6617451A NL6617451A NL6617451A NL 6617451 A NL6617451 A NL 6617451A NL 6617451 A NL6617451 A NL 6617451A NL 6617451 A NL6617451 A NL 6617451A NL 6617451 A NL6617451 A NL 6617451A
Authority
NL
Netherlands
Application number
NL6617451A
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 NL6617451A priority Critical patent/NL6617451A/xx
Priority to DE19671537776 priority patent/DE1537776A1/de
Priority to GB55744/67A priority patent/GB1180140A/en
Priority to BE707768D priority patent/BE707768A/xx
Priority to FR1559686D priority patent/FR1559686A/fr
Priority to US689899A priority patent/US3598917A/en
Publication of NL6617451A publication Critical patent/NL6617451A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
NL6617451A 1966-12-12 1966-12-12 NL6617451A (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL6617451A NL6617451A (fr) 1966-12-12 1966-12-12
DE19671537776 DE1537776A1 (de) 1966-12-12 1967-12-05 Schaltungsanordnung zur Bewirkung eines automatischen Alarmanrufs
GB55744/67A GB1180140A (en) 1966-12-12 1967-12-07 Automatic Signal Transmission System
BE707768D BE707768A (fr) 1966-12-12 1967-12-11
FR1559686D FR1559686A (fr) 1966-12-12 1967-12-12
US689899A US3598917A (en) 1966-12-12 1967-12-12 Automatic signal transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6617451A NL6617451A (fr) 1966-12-12 1966-12-12

Publications (1)

Publication Number Publication Date
NL6617451A true NL6617451A (fr) 1968-06-13

Family

ID=19798430

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6617451A NL6617451A (fr) 1966-12-12 1966-12-12

Country Status (6)

Country Link
US (1) US3598917A (fr)
BE (1) BE707768A (fr)
DE (1) DE1537776A1 (fr)
FR (1) FR1559686A (fr)
GB (1) GB1180140A (fr)
NL (1) NL6617451A (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2088881A5 (fr) * 1970-04-28 1972-01-07 Fichet Bauche
US3950618A (en) * 1971-03-25 1976-04-13 Bloisi Albertoni De Lemos System for public opinion research
US3700823A (en) * 1971-09-02 1972-10-24 Northern Electric Co Combined alarm transmission and service call system
BE789388A (fr) * 1971-11-22 1973-01-15 Telecomunicazioni Soc It Systeme de tele-surveillance utilisant le reseau telephonique pour la transmission des informations
DE2158278C3 (de) * 1971-11-24 1985-12-12 Keidel, Kurt, 8000 München Verfahren und Schaltungsanordnung zum Verbinden von beliebigen Teilnehmerstellen, die an einer Fernsprechvermittlungsanlage angeschlossen sind, mit einer von mehreren Abfragestellen in einer Datenzentrale
US3937889A (en) * 1973-01-15 1976-02-10 Sperry Rand Corporation Data communication apparatus for use in a telephone system
FR2430146B1 (fr) * 1978-06-29 1986-05-09 Stratel Sa Dispositif telephonique d'appel automatique
FR2446569B2 (fr) * 1978-12-13 1987-01-23 Stratel Dispositif telephonique d'appel automatique
FR2446519A1 (fr) * 1979-01-11 1980-08-08 Thomson Csf Systeme de signalisation sur ligne de raccordement d'utilisation d'un reseau telephonique et reseau telephonique comportant de tels systemes
DE2913012A1 (de) * 1979-03-31 1980-10-09 Vierling Oskar Anordnung zur uebertragung von notrufen ueber fernsprechleitungen
JPS57500401A (fr) * 1980-03-10 1982-03-04
US5708548A (en) * 1996-05-24 1998-01-13 Cascade Systems Inc. Protection device for a spa pack
US5937036A (en) * 1996-12-20 1999-08-10 Siemens Information And Communication Networks, Inc. Method and apparatus for sensing external alarms using a standard telephony interface
US6628779B1 (en) * 1998-05-11 2003-09-30 Telcordia Technologies, Inc. Method and system for scaleable near-end speech cancellation for tip and ring tone signal detectors
CN112540945B (zh) * 2021-02-01 2022-04-12 郑蕊蕊 带有新型键盘的会计专用计算机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911474A (en) * 1957-11-01 1959-11-03 Bell Telephone Labor Inc Telephone alarm system
US3492426A (en) * 1965-03-18 1970-01-27 Davis Sidney Foreman Telephone alarm system where a central station alerts a preselected agency in response to a received pulse coded frequency signal identifying a particular alarm condition at a particular subscriber station
US3401234A (en) * 1965-04-16 1968-09-10 Rimac Ltd Combined audio program and alarm signaling system with line supervision
US3484553A (en) * 1966-04-26 1969-12-16 Clarence Anding Lovell Alarm system connected to a telephone subscriber's circuit so as to transmit an alarm through the central office without interfering with normal telephone operation

Also Published As

Publication number Publication date
GB1180140A (en) 1970-02-04
BE707768A (fr) 1968-06-11
US3598917A (en) 1971-08-10
DE1537776A1 (de) 1969-12-18
FR1559686A (fr) 1969-03-14

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