GB2217125B - An alarm system - Google Patents

An alarm system

Info

Publication number
GB2217125B
GB2217125B GB8808251A GB8808251A GB2217125B GB 2217125 B GB2217125 B GB 2217125B GB 8808251 A GB8808251 A GB 8808251A GB 8808251 A GB8808251 A GB 8808251A GB 2217125 B GB2217125 B GB 2217125B
Authority
GB
United Kingdom
Prior art keywords
alarm system
alarm
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.)
Expired - Fee Related
Application number
GB8808251A
Other versions
GB2217125A (en
GB8808251D0 (en
Inventor
Martin George Bone
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.)
DIGITAL AUDIO Ltd
Original Assignee
DIGITAL AUDIO Ltd
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 DIGITAL AUDIO Ltd filed Critical DIGITAL AUDIO Ltd
Priority to GB8808251A priority Critical patent/GB2217125B/en
Publication of GB8808251D0 publication Critical patent/GB8808251D0/en
Publication of GB2217125A publication Critical patent/GB2217125A/en
Application granted granted Critical
Publication of GB2217125B publication Critical patent/GB2217125B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Alarm Systems (AREA)
GB8808251A 1988-04-08 1988-04-08 An alarm system Expired - Fee Related GB2217125B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8808251A GB2217125B (en) 1988-04-08 1988-04-08 An alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8808251A GB2217125B (en) 1988-04-08 1988-04-08 An alarm system

Publications (3)

Publication Number Publication Date
GB8808251D0 GB8808251D0 (en) 1988-05-11
GB2217125A GB2217125A (en) 1989-10-18
GB2217125B true GB2217125B (en) 1992-02-05

Family

ID=10634807

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8808251A Expired - Fee Related GB2217125B (en) 1988-04-08 1988-04-08 An alarm system

Country Status (1)

Country Link
GB (1) GB2217125B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2101784A (en) * 1981-06-23 1983-01-19 Chloride Group Plc Fire alarms
GB2207307A (en) * 1987-07-22 1989-01-25 Msa Fail-safe monitoring circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2101784A (en) * 1981-06-23 1983-01-19 Chloride Group Plc Fire alarms
GB2207307A (en) * 1987-07-22 1989-01-25 Msa Fail-safe monitoring circuit

Also Published As

Publication number Publication date
GB2217125A (en) 1989-10-18
GB8808251D0 (en) 1988-05-11

Similar Documents

Publication Publication Date Title
GB8808337D0 (en) Alarm system
GB8828877D0 (en) Alarm system
GB2205670B (en) Alarm system
GB8707393D0 (en) Alarm systems
GB8900502D0 (en) Alarm system
GB2233135B (en) Alarm system
GB2202665B (en) Alarm systems
GB8920131D0 (en) An improved alarm system
GB8711332D0 (en) Alarm system
GB9004862D0 (en) Alarm system
GB8729189D0 (en) Alarm system
GB2217125B (en) An alarm system
GB9022769D0 (en) Alarm system
GB8804234D0 (en) Alarm system
GB8813612D0 (en) Alarm system
GB8811812D0 (en) Alarm system
GB8813610D0 (en) Alarm system
DK163388A (en) Alarm system
GB8826681D0 (en) Alarm systems
GB8926471D0 (en) Alarm system
GB8917773D0 (en) Alarm system
GB8913950D0 (en) Alarm system
GB8904235D0 (en) Alarm system
GB8701487D0 (en) Alarm system
GB8707593D0 (en) Alarm system

Legal Events

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

Effective date: 20030408