FR989776A - Avertisseur sonore automatique - Google Patents

Avertisseur sonore automatique

Info

Publication number
FR989776A
FR989776A FR989776DA FR989776A FR 989776 A FR989776 A FR 989776A FR 989776D A FR989776D A FR 989776DA FR 989776 A FR989776 A FR 989776A
Authority
FR
France
Prior art keywords
automatic horn
horn
automatic
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
English (en)
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.)
APPLIC RADIO ELECTR
Original Assignee
APPLIC RADIO ELECTR
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 APPLIC RADIO ELECTR filed Critical APPLIC RADIO ELECTR
Application granted granted Critical
Publication of FR989776A publication Critical patent/FR989776A/fr
Expired legal-status Critical Current

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)
FR989776D 1949-04-28 1949-04-28 Avertisseur sonore automatique Expired FR989776A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR989776T 1949-04-28

Publications (1)

Publication Number Publication Date
FR989776A true FR989776A (fr) 1951-09-13

Family

ID=9540475

Family Applications (1)

Application Number Title Priority Date Filing Date
FR989776D Expired FR989776A (fr) 1949-04-28 1949-04-28 Avertisseur sonore automatique

Country Status (1)

Country Link
FR (1) FR989776A (fr)

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