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
  • G04C21/326—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 adjustable from the different places themselves

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=4309977

Family Applications (1)

Country Status (1)

• 1913
  • 1913-02-14 CH CH64597A patent/CH64597A/fr unknown

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