FR545459A - Avertisseur auditif - Google Patents

Avertisseur auditif

Info

Publication number
FR545459A
FR545459A FR545459DA FR545459A FR 545459 A FR545459 A FR 545459A FR 545459D A FR545459D A FR 545459DA FR 545459 A FR545459 A FR 545459A
Authority
FR
France
Prior art keywords
hearing aid
hearing
aid
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)
Inventor
Maurice Lecuyer
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 FR545459A publication Critical patent/FR545459A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
    • G04F3/02—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms
    • G04F3/022—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms using mechanical signalling device

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR545459D 1921-12-31 1921-12-31 Avertisseur auditif Expired FR545459A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR545459T 1921-12-31

Publications (1)

Publication Number Publication Date
FR545459A true FR545459A (fr) 1922-10-12

Family

ID=8932965

Family Applications (1)

Application Number Title Priority Date Filing Date
FR545459D Expired FR545459A (fr) 1921-12-31 1921-12-31 Avertisseur auditif

Country Status (1)

Country Link
FR (1) FR545459A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0955611A1 (fr) * 1998-05-07 1999-11-10 Frédérique Constant SA Dispositif de chronomètrage à comptage à rebours

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0955611A1 (fr) * 1998-05-07 1999-11-10 Frédérique Constant SA Dispositif de chronomètrage à comptage à rebours

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