FR657075A - Horloge avertisseuse automatique - Google Patents

Horloge avertisseuse automatique

Info

Publication number
FR657075A
FR657075A FR657075DA FR657075A FR 657075 A FR657075 A FR 657075A FR 657075D A FR657075D A FR 657075DA FR 657075 A FR657075 A FR 657075A
Authority
FR
France
Prior art keywords
automatic warning
warning clock
clock
automatic
warning
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
Apostol Stavridis
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 FR657075A publication Critical patent/FR657075A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/30—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school
    • G04C21/32—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school giving indications at a number of places each at a different time, e.g. system of alarms in a hotel
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/30—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school
    • G04C21/32—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school giving indications at a number of places each at a different time, e.g. system of alarms in a hotel
    • G04C21/323—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school giving indications at a number of places each at a different time, e.g. system of alarms in a hotel by the hand(s) or handlike members closing the contacts

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR657075D 1928-06-15 1928-06-15 Horloge avertisseuse automatique Expired FR657075A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR657075T 1928-06-15

Publications (1)

Publication Number Publication Date
FR657075A true FR657075A (fr) 1929-05-16

Family

ID=9008195

Family Applications (1)

Application Number Title Priority Date Filing Date
FR657075D Expired FR657075A (fr) 1928-06-15 1928-06-15 Horloge avertisseuse automatique

Country Status (1)

Country Link
FR (1) FR657075A (fr)

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