NL7501963A - Alarmstelsel. - Google Patents

Alarmstelsel.

Info

Publication number
NL7501963A
NL7501963A NL7501963A NL7501963A NL7501963A NL 7501963 A NL7501963 A NL 7501963A NL 7501963 A NL7501963 A NL 7501963A NL 7501963 A NL7501963 A NL 7501963A NL 7501963 A NL7501963 A NL 7501963A
Authority
NL
Netherlands
Prior art keywords
alarm system
alarm
Prior art date
Application number
NL7501963A
Other languages
English (en)
Original Assignee
Arne Verner Hillberg
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 Arne Verner Hillberg filed Critical Arne Verner Hillberg
Publication of NL7501963A publication Critical patent/NL7501963A/nl

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/014—Alarm signalling to a central station with two-way communication, e.g. with signalling back

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Alarm Systems (AREA)
NL7501963A 1974-02-19 1975-02-19 Alarmstelsel. NL7501963A (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7402133A SE391993B (sv) 1974-02-19 1974-02-19 Larmsystem omfattande en central och till denna anslutna abonnenter

Publications (1)

Publication Number Publication Date
NL7501963A true NL7501963A (nl) 1975-08-21

Family

ID=20320242

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7501963A NL7501963A (nl) 1974-02-19 1975-02-19 Alarmstelsel.

Country Status (11)

Country Link
US (1) US3991412A (nl)
CA (1) CA1057833A (nl)
CH (1) CH582924A5 (nl)
DE (1) DE2506830A1 (nl)
DK (1) DK61975A (nl)
FI (1) FI750401A (nl)
FR (1) FR2261575A1 (nl)
GB (1) GB1455527A (nl)
IT (1) IT1029755B (nl)
NL (1) NL7501963A (nl)
SE (1) SE391993B (nl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4777488A (en) * 1986-05-16 1988-10-11 Cw Products, Inc. Restaurant service request communications system
BR9303182A (pt) * 1993-08-31 1994-04-19 Esca Telecomunicacoes Terminal remoto de dados

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430218A (en) * 1965-09-13 1969-02-25 Charles P Healey Alarm reporting system
US3707708A (en) * 1970-12-16 1972-12-26 Multra Guard Inc Muting circuit for a security alarm system providing a sonic alert
US3854127A (en) * 1973-09-18 1974-12-10 C Damon Alarm system with automatic ringback

Also Published As

Publication number Publication date
US3991412A (en) 1976-11-09
GB1455527A (en) 1976-11-10
IT1029755B (it) 1979-03-20
CH582924A5 (nl) 1976-12-15
SE391993B (sv) 1977-03-07
FR2261575A1 (nl) 1975-09-12
CA1057833A (en) 1979-07-03
FI750401A (nl) 1975-08-20
DE2506830A1 (de) 1975-08-21
SE7402133L (nl) 1975-08-20
DK61975A (nl) 1975-10-20

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Legal Events

Date Code Title Description
BV The patent application has lapsed