SE373474B - - Google Patents

Info

Publication number
SE373474B
SE373474B SE7308086A SE7308086A SE373474B SE 373474 B SE373474 B SE 373474B SE 7308086 A SE7308086 A SE 7308086A SE 7308086 A SE7308086 A SE 7308086A SE 373474 B SE373474 B SE 373474B
Authority
SE
Sweden
Application number
SE7308086A
Other versions
SE7308086L (de
Inventor
A E Trell
Original Assignee
A E Trell
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 A E Trell filed Critical A E Trell
Priority to SE7308086A priority Critical patent/SE373474B/xx
Priority to US05/475,646 priority patent/US3947641A/en
Priority to DE2426909A priority patent/DE2426909B2/de
Priority to GB2506874A priority patent/GB1474737A/en
Priority to JP49064156A priority patent/JPS5925064B2/ja
Publication of SE7308086L publication Critical patent/SE7308086L/xx
Publication of SE373474B publication Critical patent/SE373474B/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
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/025—Door telephones

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Lock And Its Accessories (AREA)
  • Telephonic Communication Services (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
SE7308086A 1973-06-07 1973-06-07 SE373474B (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE7308086A SE373474B (de) 1973-06-07 1973-06-07
US05/475,646 US3947641A (en) 1973-06-07 1974-06-03 Use of public subscriber telephone network; method and apparatus
DE2426909A DE2426909B2 (de) 1973-06-07 1974-06-04 Ober das öffentliche Fernsprechnetz gesteuerte Toröffneranlage
GB2506874A GB1474737A (en) 1973-06-07 1974-06-06 Telephone systems
JP49064156A JPS5925064B2 (ja) 1973-06-07 1974-06-07 公衆加入電話回線網の利用方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7308086A SE373474B (de) 1973-06-07 1973-06-07

Publications (2)

Publication Number Publication Date
SE7308086L SE7308086L (de) 1974-12-09
SE373474B true SE373474B (de) 1975-02-03

Family

ID=20317703

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7308086A SE373474B (de) 1973-06-07 1973-06-07

Country Status (5)

Country Link
US (1) US3947641A (de)
JP (1) JPS5925064B2 (de)
DE (1) DE2426909B2 (de)
GB (1) GB1474737A (de)
SE (1) SE373474B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985001169A1 (en) * 1983-08-23 1985-03-14 Anders Edvard Trell Method for transmission of alarm signals

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113986A (en) * 1977-10-21 1978-09-12 Bell Telephone Laboratories, Incorporated Telephone controlled lock release arrangement
US4872194A (en) * 1983-08-23 1989-10-03 Trell Anders E Method for transmission of alarm signals utilizing an entrance telephone system
SE451422B (sv) * 1985-06-27 1987-10-05 Anders Edvard Trell Forfarande for signalbehandling vid en porttelefonanleggning avsedd att anslutas till ett allment telefonnet
US4715060A (en) * 1985-07-15 1987-12-22 Lipscher Bernard N Door message apparatus with telephone answering device
US4937855A (en) * 1988-02-09 1990-06-26 Viscount Industries Limited Building security system
US5321742A (en) * 1992-07-06 1994-06-14 Stevens Clarke J Entry door answering telephone system
WO1995001041A1 (en) * 1993-06-23 1995-01-05 Feinberg David H An integrated telephone, intercom, security and control system for a multi-unit building
US6208727B1 (en) * 1998-04-17 2001-03-27 Nortel Networks Corporation Method of alerting apartment residents to the arrival of visitors
US6993123B1 (en) * 2000-03-10 2006-01-31 Verizon Services Corp. Intelligent access control system
US6885738B2 (en) * 2003-02-25 2005-04-26 Bellsouth Intellectual Property Corporation Activation of electronic lock using telecommunications network
SE0401035L (sv) * 2004-04-21 2005-10-22 Anders Trell Trust Förfarande och anordning för kommunikation/kontroll vid access
IT201600116295A1 (it) * 2016-11-17 2018-05-17 Giacomo Bonanno Apertura ad impulsi programmati di piu' accessi condominiali

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322904A (en) * 1963-12-23 1967-05-30 Avo Corp Telephone dialing device
US3484561A (en) * 1966-07-11 1969-12-16 Automatic Elect Lab Apartment telephone-intercom and door release system
US3557318A (en) * 1966-09-29 1971-01-19 American Telephone & Telegraph Apartment house telephone system
CA917327A (en) * 1969-11-19 1972-12-19 Commercial Communications Ltd. Telephone security device
CH541263A (it) * 1970-11-09 1973-08-31 Sits Soc It Telecom Siemens Dispositivo di blocco alla teleselezione e ai servizi tassati per apparecchi telefonici allacciati a centralini telefonici privati
US3784757A (en) * 1971-06-14 1974-01-08 Information Flow Inc Limited access dialing system
US3816662A (en) * 1972-11-13 1974-06-11 Gte Automatic Electric Lab Inc Combination telephone and video communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985001169A1 (en) * 1983-08-23 1985-03-14 Anders Edvard Trell Method for transmission of alarm signals

Also Published As

Publication number Publication date
SE7308086L (de) 1974-12-09
DE2426909A1 (de) 1975-01-02
US3947641A (en) 1976-03-30
GB1474737A (en) 1977-05-25
DE2426909C3 (de) 1979-06-21
JPS5925064B2 (ja) 1984-06-14
DE2426909B2 (de) 1978-11-02
JPS5032000A (de) 1975-03-28

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