Patents
Patents for G04C 23 - Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals (976)
12/1990
12/05/1990CN2067000U Timer for controlling electricity use
11/1990
11/28/1990CN2066600U Timed calling device
11/27/1990US4974217 Scale indicator used with electronic setting apparatus for setting numerical values of physical quantities or the like
11/21/1990CN2066161U Universal automatic control device for electric equipments
11/07/1990CN2065338U Energy-saving sequence controller for domestic electrical appliance
11/07/1990CN2065337U Computer ized sequence controller
11/07/1990CN2065336U Timing heater case
11/07/1990CN2065333U Globe-shaped zone time displaying clock
10/1990
10/31/1990CN2064902U Multipoint preselection timing machinery clock
10/03/1990CN2063246U Quartz alarm lock timed by rudder wheel
09/1990
09/26/1990CN2062869U Electronic clock with calendar and biochronometer
09/19/1990CN1045462A Timing switch of quartz clock
09/05/1990CN2061706U Multi-purpose electric appliance long timer
08/1990
08/15/1990CN2060566U Timing controlled mechanism
08/09/1990WO1990008986A1 Electromechanical timer switch
07/1990
07/25/1990CN1008951B Preselected device for preselected clock
07/04/1990CN2059005U Timing device for carrier pigeon
06/1990
06/27/1990CN2058767U Clock-controlled power-source timer
06/27/1990CN2058766U Multifunctional self-controlling machine for household
06/20/1990CN2058504U Multifunctional console clock
05/1990
05/02/1990EP0269684B1 Alarm clock with an alarm signal device and an adjustable contact for actuating the latter
05/01/1990US4922475 Alarm clock having means for bridging two circular conducting paths via an adjustable contact means thereby causing generation of an acoustic alarm system
03/1990
03/14/1990CN2054541U Multi-functional time switch clock
03/07/1990CN2054172U Lock controlled adjustable electric switch
03/07/1990CN1040274A Multifunctional electronic watch
02/1990
02/21/1990CN1039906A Electronic watch with alarm
02/14/1990CN1039664A Dot-line dual-displaying program-controlled time signal clock
02/01/1990DE3825308A1 Electrical or electronic switching apparatus or control apparatus of slimline construction, especially a time switch
02/01/1990DE3825267A1 Program support for an electrical time switch
01/1990
01/31/1990EP0352645A2 Small size electr(on)ic switching or regulating apparatus, in particular a switch clock
01/31/1990EP0352644A2 Programme carrier for an electric time switch
01/10/1990CN1038708A Ic for analong electronic watch and analog electronic watch
01/03/1990CN2050622U Automatic switch of improved quartz clock for mimicking the law of sunshine
12/1989
12/27/1989CN2050184U Intermittence electrifying machinery time device
12/27/1989CN2050183U Time automatic on or off power machinery alarm clock
12/20/1989EP0347251A2 A multi-functional analog electronic watch
12/20/1989EP0347249A2 An IC chip for an analog electronic watch
12/20/1989CN2049793U Electronic time controller
12/20/1989CN1038177A Alarm arrangement for timepiece
12/06/1989CN2048986U 可编程序时间控制器 Programmable time controller
11/1989
11/29/1989EP0343494A1 Alarm device for a time piece
11/29/1989CN2048598U Multi-way electric switch clock time controller
11/22/1989CN2048204U Clock with timing switch
11/22/1989CN1037408A Electronically corrected electronic timepiece
11/08/1989CN2047402U Multifunctional timing clock
11/01/1989CN2047039U Automatic broadcasting controller
11/01/1989CN2047038U Multifunction guartz clock
10/1989
10/25/1989EP0338535A2 Electronically corrected electronic timepiece
10/18/1989CN2046237U Multifunction timing clock
10/11/1989CN2045908U Electricity-saving life-prolongation protector for refrigerator
09/1989
09/20/1989CN2044742U Multipurpose time-controlling alarm clock
08/1989
08/23/1989CN2043380U Time-switching mechanical-clock unit of controlled-appliance
08/01/1989US4853558 Programmable timer with skip cycle
07/1989
07/26/1989CN2041827U Biochronometer list
07/25/1989US4851738 Lighting system having photosensing timing switch circuit
07/05/1989CN2040653U Alarm clock simple timed switch
06/1989
06/28/1989EP0172182B1 Device for mains-operated switch timers with electric running reserve
06/20/1989US4841496 Appliance timer
06/14/1989CN2039439U Timer of electric cooker
06/14/1989CN2039438U Automatic timer of electric cooker
05/1989
05/31/1989CN1033216A Magnetic control device for time telling of quartz clock
04/1989
04/18/1989US4823329 Electric timer with program carrier switchable from a short term to a long term program
04/05/1989CN2035500U Universal timed switch alarm clock
04/05/1989CN2035499U Strong current switch for electronic clock control
03/1989
03/29/1989CN2035106U Hoof-shaped clock with timer
03/22/1989CN2034710U Multipurpose timer
03/15/1989CN2034297U Auto-turnover type calendar
03/08/1989CN2033916U Alarm clock type timing opening apparatus for electric appliance
03/02/1989DE3728036A1 Electric time switch (clock timer)
03/01/1989EP0304681A2 Electric switch clock with an exchangeable commutation disc
02/1989
02/01/1989CN2031944U Multifunction alarm clock with mechanical movement
01/1989
01/18/1989EP0170664B1 Device for mains-operated switch timers with electric running reserve
01/18/1989CN2031115U Time controlled switch
11/1988
11/29/1988US4788669 Electronic timepiece
11/23/1988CN88203522U Multifunctional pointer quartz clock
11/09/1988CN88200324U Timing on/off socket-board
09/1988
09/28/1988CN87215744U Electric switch clock
09/27/1988CA1242329A1 Acoustic alarm setting device for a timepiece
09/21/1988EP0282829A2 Electronic time switch with a programme carrier which can be switched from a short to a long time interval programme
08/1988
08/17/1988CN87217182U Universal quartz clock controlled switch
08/17/1988CN87205030U 电子定时器 Electronic timers
06/1988
06/29/1988CN86202252U Automatic control multi-functional clock with multi-sequence energy-saving prolong life
06/08/1988EP0269684A1 Alarm clock with an alarm signal device and an adjustable contact for actuating the latter.
05/1988
05/11/1988CN87204265U Multipurpose clock with 3-660 minutes controllable switch
05/11/1988CN87203887U Electronic alarm clock with timing controller and door bell
05/11/1988CN87200802U Automatic controllable timer
05/11/1988CN86107476A Multifunctional random programming electronic timer
05/10/1988US4744068 Timepiece setting arrangement including a safety lock
04/1988
04/27/1988CN87210920U Time programmed switch
04/06/1988CN87208526U Clockwork-triggered timing controller
03/1988
03/23/1988CN87211602U 电子音乐闹钟 Electronic Music Alarm Clock
03/09/1988CN86200305U Automatic controlling multi-functional clock with automatic operating device at preselected time
02/1988
02/24/1988CN87208006U 多功能时钟控制器 Multifunction Clock Controller
02/24/1988CN87200017U Clock-type electronic timer
01/1988
01/13/1988CN87208264U Automatic switch of simulating sunchine program on quartz clock
12/1987
12/30/1987WO1987007966A1 Alarm clock with an alarm signal device and an adjustable contact for actuating the latter
12/29/1987CA1230910A1 Cover for a timing mechanism
12/09/1987CN87102284A Time sequence switch
12/09/1987CN86210784U Data-storage type automatic timing device
12/09/1987CN86207007U Multielement duplex timing distributor
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