FR832629A - Improvements to automatic fire, burglary and similar alarms - Google Patents

Improvements to automatic fire, burglary and similar alarms

Info

Publication number
FR832629A
FR832629A FR832629DA FR832629A FR 832629 A FR832629 A FR 832629A FR 832629D A FR832629D A FR 832629DA FR 832629 A FR832629 A FR 832629A
Authority
FR
France
Prior art keywords
burglary
automatic fire
similar alarms
alarms
similar
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
Other languages
French (fr)
Inventor
Edred Rabjohn Mountstephen
William John Wood
Alexander George Spence
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
Application granted granted Critical
Publication of FR832629A publication Critical patent/FR832629A/en
Expired legal-status Critical Current

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
    • H04M11/045—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems using recorded signals, e.g. speech

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Electromechanical Clocks (AREA)
  • Fire Alarms (AREA)
FR832629D 1937-02-15 1938-01-25 Improvements to automatic fire, burglary and similar alarms Expired FR832629A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB206325X 1937-02-15

Publications (1)

Publication Number Publication Date
FR832629A true FR832629A (en) 1938-09-29

Family

ID=10149136

Family Applications (1)

Application Number Title Priority Date Filing Date
FR832629D Expired FR832629A (en) 1937-02-15 1938-01-25 Improvements to automatic fire, burglary and similar alarms

Country Status (6)

Country Link
US (1) US2191971A (en)
BE (1) BE426001A (en)
CH (1) CH206325A (en)
FR (1) FR832629A (en)
GB (1) GB492161A (en)
NL (1) NL61918C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB589160A (en) * 1945-03-15 1947-06-12 Alfred Samuel Horace Picking Improvements in or relating to automatic alarm systems
FR956829A (en) * 1946-09-03 1950-02-08
US2555714A (en) * 1950-01-24 1951-06-05 H S Brimm Alarm system
US2804501A (en) * 1955-09-26 1957-08-27 Boeing Co Voice warning systems

Also Published As

Publication number Publication date
CH206325A (en) 1939-07-31
GB492161A (en) 1938-09-15
US2191971A (en) 1940-02-27
BE426001A (en)
NL61918C (en)

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