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Class Information
Number: 368/241
Name: Horology: time measuring systems or devices > Displays or display device details > Optical > With solid body light emitter (e.g., led)
Description: Subject matter wherein the indicating means is comprised of solid material which emits visible radiation upon application of an electrical current.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8654616 Visual alert device Feb. 18, 2014
8547801 Stop light go light timer Oct. 1, 2013
8389985 Color conversion film containing a conjugated high molecular weight copolymer and multicolor light-emitting organic EL device including the same Mar. 5, 2013
8319320 LED module Nov. 27, 2012
8194507 Hidden display and clock audio apparatus including same Jun. 5, 2012
8031560 Open eyes alarm clock Oct. 4, 2011
7978566 Timing apparatus for alerting a user when time has elapsed Jul. 12, 2011
7778116 Timepiece having compass feature Aug. 17, 2010
7755977 Display unit with decorative effects for a portable instrument, such as a watch Jul. 13, 2010
7646678 Analog watch Jan. 12, 2010
7550930 Method and device for lighting an electronic or electromechanical apparatus Jun. 23, 2009
7388813 Time display device Jun. 17, 2008
7385879 Radio-controlled clock Jun. 10, 2008
7221044 Heterogeneous integrated high voltage DC/AC light emitter May. 22, 2007
7180095 Display device and manufacturing method thereof Feb. 20, 2007
7129529 Light emitting module Oct. 31, 2006
6894440 Method and device for lighting an electronic or electromechanical apparatus May. 17, 2005
6690623 Multi-functional time indicating device with a multi-colored fiber optic display Feb. 10, 2004
6683822 Time display device Jan. 27, 2004
6549179 LED display assembly Apr. 15, 2003
6388642 Bidirectional multispeed indexing control system May. 14, 2002
6307527 LED display assembly Oct. 23, 2001
6147935 Transformerless LED digital alarm clock Nov. 14, 2000
5917779 Transformerless LED driving circuit Jun. 29, 1999
5896348 Method and timepiece for displaying time using grouped binary indicators Apr. 20, 1999
5818798 Timepiece with integral alphanumeric display Oct. 6, 1998
5805534 Positionally consistent, balanced digital time displays Sep. 8, 1998
5623273 Week-day and/or time display system for a data display radio pager Apr. 22, 1997
5410520 Spatial/digital timepiece Apr. 25, 1995
5008870 FIFO clock Apr. 16, 1991
4939709 Electronic visual display system for simulating the motion of a clock pendulum Jul. 3, 1990
4920524 Multimode digital timepiece Apr. 24, 1990
4803672 Electric timepiece Feb. 7, 1989
4771409 Electronic analogue display Sep. 13, 1988
4757484 Mayan Symbol-bearing clock device Jul. 12, 1988
4752919 Clock with digital hour station and line of discrete, binary minute substations Jun. 21, 1988
4747086 Digital watch with fluorescent display and mercury coated crystal May. 24, 1988
4707141 Variable color analog timepiece Nov. 17, 1987
4702615 Analog display timepiece Oct. 27, 1987
4597674 Multiplex digital clock Jul. 1, 1986
4459035 All solid-state complementary electrochromic display device Jul. 10, 1984
4448544 Method and apparatus to digitally display the time of day May. 15, 1984
4290131 Electronic timepiece Sep. 15, 1981
4258431 Electronic timepiece having an analog display device and a digital display device Mar. 24, 1981
4255806 Display means for chronometers with electro-optical elements Mar. 10, 1981
4219809 Compensation scheme for electrochromic displays Aug. 26, 1980
4201039 Numerical display using plural light sources and having a reduced and substantially constant current requirement May. 6, 1980
4198629 Numerical display using plural light sources and having a reduced and substantially constant current requirement Apr. 15, 1980
4184319 Digital display type electronic time piece Jan. 22, 1980
4149368 Electronic timepiece with negative resistance light emitting elements Apr. 17, 1979

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