FR685092A - Improvements to theft and fire warning devices - Google Patents

Improvements to theft and fire warning devices

Info

Publication number
FR685092A
FR685092A FR685092DA FR685092A FR 685092 A FR685092 A FR 685092A FR 685092D A FR685092D A FR 685092DA FR 685092 A FR685092 A FR 685092A
Authority
FR
France
Prior art keywords
theft
warning devices
fire warning
fire
devices
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
Sydney Larris
Valentine Edwin Newman
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 FR685092A publication Critical patent/FR685092A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
    • G08B19/005—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow combined burglary and fire alarm systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR685092D 1929-11-14 1929-11-14 Improvements to theft and fire warning devices Expired FR685092A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR685092T 1929-11-14

Publications (1)

Publication Number Publication Date
FR685092A true FR685092A (en) 1930-07-04

Family

ID=9024812

Family Applications (1)

Application Number Title Priority Date Filing Date
FR685092D Expired FR685092A (en) 1929-11-14 1929-11-14 Improvements to theft and fire warning devices

Country Status (1)

Country Link
FR (1) FR685092A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5570083A (en) * 1995-05-02 1996-10-29 Johnson; Lee A. Door bell/answering system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5570083A (en) * 1995-05-02 1996-10-29 Johnson; Lee A. Door bell/answering system

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