NL7215700A - - Google Patents

Info

Publication number
NL7215700A
NL7215700A NL7215700A NL7215700A NL7215700A NL 7215700 A NL7215700 A NL 7215700A NL 7215700 A NL7215700 A NL 7215700A NL 7215700 A NL7215700 A NL 7215700A NL 7215700 A NL7215700 A NL 7215700A
Authority
NL
Netherlands
Application number
NL7215700A
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
Publication of NL7215700A publication Critical patent/NL7215700A/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
NL7215700A 1971-11-22 1972-11-20 NL7215700A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3144071A IT946083B (en) 1971-11-22 1971-11-22 REMOTE SURVEILLANCE SYSTEM USING THE URBAN TELEPHONE NETWORK FOR THE TRANSMISSION OF INFORMATION

Publications (1)

Publication Number Publication Date
NL7215700A true NL7215700A (en) 1973-05-24

Family

ID=11233633

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7215700A NL7215700A (en) 1971-11-22 1972-11-20

Country Status (6)

Country Link
BE (1) BE789388A (en)
DE (1) DE2255213A1 (en)
FR (1) FR2160793B1 (en)
GB (1) GB1385408A (en)
IT (1) IT946083B (en)
NL (1) NL7215700A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1601941A (en) * 1977-03-04 1981-11-04 Post Office System for transmitting alarm information over telephone lines
GB2119981B (en) * 1982-01-07 1985-08-07 Morrison John M Alarm systems
DE3321417C2 (en) * 1983-06-14 1985-07-04 ANT Nachrichtentechnik GmbH, 7150 Backnang Emergency call transmission system
DE3324515A1 (en) * 1983-06-14 1985-01-17 ANT Nachrichtentechnik GmbH, 7150 Backnang Emergency call system
DE3321416C2 (en) * 1983-06-14 1985-07-04 ANT Nachrichtentechnik GmbH, 7150 Backnang Emergency call transmission system
DE3324516A1 (en) * 1983-06-14 1985-01-17 ANT Nachrichtentechnik GmbH, 7150 Backnang Emergency call system
ES2131030B1 (en) * 1997-11-28 2000-03-01 Telefonica Sa RADIO SYSTEM CONTROL DEVICE.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6617451A (en) * 1966-12-12 1968-06-13
CH473433A (en) * 1967-04-04 1969-05-31 Securitas Ag Schweiz Bewachung Sound-frequency alarm transmission system

Also Published As

Publication number Publication date
DE2255213A1 (en) 1973-06-14
IT946083B (en) 1973-05-21
FR2160793B1 (en) 1975-06-13
GB1385408A (en) 1975-02-26
BE789388A (en) 1973-01-15
FR2160793A1 (en) 1973-07-06

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Legal Events

Date Code Title Description
BV The patent application has lapsed