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
• • 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
  • G04C21/28—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to put into action electro-acoustic means, e.g. awakening by music
• • G—PHYSICS
  • G04—HOROLOGY
  • G04F—TIME-INTERVAL MEASURING
  • G04F1/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers
  • G04F1/005—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers using electronic timing, e.g. counting means
• • 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
  • G04F3/06—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 electric driving mechanisms
  • G04F3/08—Additional arrangements in connection with ordinary electric clocks for this purpose
• • G—PHYSICS
  • G04—HOROLOGY
  • G04G—ELECTRONIC TIME-PIECES
  • G04G13/00—Producing acoustic time signals
  • G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
  • G04G13/025—Producing acoustic time signals at preselected times, e.g. alarm clocks acting only at one preselected time
• • G—PHYSICS
  • G04—HOROLOGY
  • G04G—ELECTRONIC TIME-PIECES
  • G04G9/00—Visual time or date indication means
  • G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
  • G04G9/12—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Chemical & Material Sciences (AREA)
• Crystallography & Structural Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Electric Clocks (AREA)
• Electromechanical Clocks (AREA)
• Indicating Measured Values (AREA)
• Measurement Of Predetermined Time Intervals (AREA)
• Measurement Of Unknown Time Intervals (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=13051690

Family Applications (2)

Family Applications After (1)

Country Status (5)

Families Citing this family (6)

Family Cites Families (1)

• 1971
  • 1971-07-30 JP JP5730071A patent/JPS5536957B1/ja active Pending
• 1972
  • 1972-07-25 GB GB3473972A patent/GB1360932A/en not_active Expired
  • 1972-07-28 FR FR7227239A patent/FR2148065B1/fr not_active Expired
  • 1972-07-31 DE DE19722237548 patent/DE2237548C2/de not_active Expired
  • 1972-07-31 CH CH1134172D patent/CH1134172A4/xx unknown
  • 1972-07-31 CH CH1134172A patent/CH589318B5/xx not_active IP Right Cessation

Also Published As

Similar Documents