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Class Information
Number: 368/79
Name: Horology: time measuring systems or devices > Chronological > With mechanical or electromechanical driven display > Optical
Description: Subject matter wherein the time display consists of means for projecting, reflecting, or transmitting electrically produced visible radiation from or through time representative indicia.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7388813 |
Time display device |
Jun. 17, 2008 |
| 7379393 |
Timer device for use in an audio/visual presentation |
May. 27, 2008 |
| 7366059 |
Display device for a wristwatch |
Apr. 29, 2008 |
| 7154818 |
Radio controlled clock movement control system |
Dec. 26, 2006 |
| 7149152 |
Projection clock |
Dec. 12, 2006 |
| 6987711 |
Analog indicator device for timekeeping clock and use thereof |
Jan. 17, 2006 |
| 6871407 |
Equatorial sundial with simple time and date interpretation |
Mar. 29, 2005 |
| 6798720 |
Projection alarm clock |
Sep. 28, 2004 |
| 6754139 |
Animated timepiece |
Jun. 22, 2004 |
| 6731571 |
Position detecting and correcting device for timepiece |
May. 4, 2004 |
| 6680877 |
Solar night splitter and event timer |
Jan. 20, 2004 |
| 6473366 |
Method for timing a clock |
Oct. 29, 2002 |
| 6473367 |
Positioning mechanism for a radio clock |
Oct. 29, 2002 |
| 6378771 |
System and method for managing business meetings |
Apr. 30, 2002 |
| 6236622 |
Lamp and alarm clock with gradually increasing light or sounds |
May. 22, 2001 |
| 6220512 |
System and method for managing business meetings |
Apr. 24, 2001 |
| 6219306 |
Device for projecting a dynamic spectral display |
Apr. 17, 2001 |
| 6160767 |
Clock |
Dec. 12, 2000 |
| 5596553 |
Digital sundial |
Jan. 21, 1997 |
| 5365495 |
Clock device including hour, decade and unit minute stations |
Nov. 15, 1994 |
| 5247491 |
Device for projecting a rainbow-like spectral display in the form of a symbol design, time indicating display and the like |
Sep. 21, 1993 |
| 5247492 |
Projection clock |
Sep. 21, 1993 |
| 5243568 |
Bioclock |
Sep. 7, 1993 |
| 5237545 |
Electronic simulated sundial timepiece |
Aug. 17, 1993 |
| 5212672 |
Timing control apparatus |
May. 18, 1993 |
| 4970815 |
Light display |
Nov. 20, 1990 |
| 4834475 |
Holographic analogue indicating means |
May. 30, 1989 |
| 4461581 |
Light beam clock |
Jul. 24, 1984 |
| 4415276 |
Electronic timepiece |
Nov. 15, 1983 |
| 4374623 |
Light beam clock |
Feb. 22, 1983 |
| 4253170 |
Time indicating light fixture |
Feb. 24, 1981 |
| 4236375 |
Electronic watch |
Dec. 2, 1980 |
| 4228346 |
Self-calibrating electric clock circuit |
Oct. 14, 1980 |
| 4208869 |
Illumination device for electronic timepiece |
Jun. 24, 1980 |
| 4207731 |
Electronic timepiece control circuit |
Jun. 17, 1980 |
| 4205518 |
Voltage conversion system for electronic timepiece |
Jun. 3, 1980 |
| 4034549 |
Shadow clock |
Jul. 12, 1977 |
| 3998044 |
Electronic timepiece |
Dec. 21, 1976 |
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