CH291958A - Alarm device. - Google Patents

Alarm device.

Info

Publication number
CH291958A
CH291958A CH291958DA CH291958A CH 291958 A CH291958 A CH 291958A CH 291958D A CH291958D A CH 291958DA CH 291958 A CH291958 A CH 291958A
Authority
CH
Switzerland
Prior art keywords
alarm device
alarm
Prior art date
Application number
Other languages
French (fr)
Inventor
Marzi Natale
Original Assignee
Marzi Natale
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 Marzi Natale filed Critical Marzi Natale
Publication of CH291958A publication Critical patent/CH291958A/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/012—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using recorded signals, e.g. speech

Landscapes

  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
CH291958D 1949-04-02 1950-03-31 Alarm device. CH291958A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT291958X 1949-04-02

Publications (1)

Publication Number Publication Date
CH291958A true CH291958A (en) 1953-07-15

Family

ID=11226533

Family Applications (1)

Application Number Title Priority Date Filing Date
CH291958D CH291958A (en) 1949-04-02 1950-03-31 Alarm device.

Country Status (4)

Country Link
BE (1) BE494881A (en)
CH (1) CH291958A (en)
DE (1) DE830466C (en)
FR (1) FR1031567A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962587C (en) * 1952-11-15 1957-04-25 Wilhelm Kengelbach Fire, accident and safety alarm system
US4234874A (en) * 1978-11-08 1980-11-18 Inventional/Security Development Corp. Alarm system and method thereof

Also Published As

Publication number Publication date
FR1031567A (en) 1953-06-24
BE494881A (en)
DE830466C (en) 1952-02-04

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