CA952209A - Fire alarm system - Google Patents

Fire alarm system

Info

Publication number
CA952209A
CA952209A CA143,552A CA143552A CA952209A CA 952209 A CA952209 A CA 952209A CA 143552 A CA143552 A CA 143552A CA 952209 A CA952209 A CA 952209A
Authority
CA
Canada
Prior art keywords
alarm system
fire alarm
fire
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
Application number
CA143,552A
Other versions
CA143552S (en
Inventor
Harry C. Goodwater
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.)
AUDIO ALERT CORP
Original Assignee
AUDIO ALERT 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 AUDIO ALERT CORP filed Critical AUDIO ALERT CORP
Application granted granted Critical
Publication of CA952209A publication Critical patent/CA952209A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B27/00—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
    • G08B27/006—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations with transmission via telephone network
    • 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

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
CA143,552A 1971-06-01 1972-05-31 Fire alarm system Expired CA952209A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14840971A 1971-06-01 1971-06-01

Publications (1)

Publication Number Publication Date
CA952209A true CA952209A (en) 1974-07-30

Family

ID=22525650

Family Applications (1)

Application Number Title Priority Date Filing Date
CA143,552A Expired CA952209A (en) 1971-06-01 1972-05-31 Fire alarm system

Country Status (2)

Country Link
US (1) US3703721A (en)
CA (1) CA952209A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2752959A1 (en) * 1977-11-28 1979-05-31 Walter Holzer WARNING AND ALARM SYSTEM
CH686913A5 (en) * 1993-11-22 1996-07-31 Cerberus Ag Arrangement for early detection of fires.
CA2255960C (en) * 1996-05-20 2001-08-14 Harrington Signal Incorporated Manual modular pull station
US5760678A (en) * 1996-05-20 1998-06-02 Harrington Signal Incorporated Manual modular pull station

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2351587A (en) * 1937-08-03 1944-06-20 John H Derby Alarm circuits

Also Published As

Publication number Publication date
US3703721A (en) 1972-11-21

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