GB8613013D0 - Interphone system - Google Patents

Interphone system

Info

Publication number
GB8613013D0
GB8613013D0 GB868613013A GB8613013A GB8613013D0 GB 8613013 D0 GB8613013 D0 GB 8613013D0 GB 868613013 A GB868613013 A GB 868613013A GB 8613013 A GB8613013 A GB 8613013A GB 8613013 D0 GB8613013 D0 GB 8613013D0
Authority
GB
United Kingdom
Prior art keywords
interphone system
interphone
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB868613013A
Other versions
GB2175773A (en
GB2175773B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Publication of GB8613013D0 publication Critical patent/GB8613013D0/en
Publication of GB2175773A publication Critical patent/GB2175773A/en
Application granted granted Critical
Publication of GB2175773B publication Critical patent/GB2175773B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0297—Robbery alarms, e.g. hold-up alarms, bag snatching alarms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Alarm Systems (AREA)
GB8613013A 1985-05-29 1986-05-29 Interphone system with security function Expired GB2175773B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60115927A JPS61274463A (en) 1985-05-29 1985-05-29 Interphone set with security function

Publications (3)

Publication Number Publication Date
GB8613013D0 true GB8613013D0 (en) 1986-07-02
GB2175773A GB2175773A (en) 1986-12-03
GB2175773B GB2175773B (en) 1989-07-05

Family

ID=14674634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8613013A Expired GB2175773B (en) 1985-05-29 1986-05-29 Interphone system with security function

Country Status (4)

Country Link
JP (1) JPS61274463A (en)
KR (1) KR900001134B1 (en)
CA (1) CA1251585A (en)
GB (1) GB2175773B (en)

Also Published As

Publication number Publication date
KR860009570A (en) 1986-12-23
CA1251585A (en) 1989-03-21
GB2175773A (en) 1986-12-03
KR900001134B1 (en) 1990-02-27
GB2175773B (en) 1989-07-05
JPS61274463A (en) 1986-12-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980529