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Class Information
Number: 33/270
Name: Geometrical instruments > Straight-line light ray type > Celestial > Time computing > Including gnomonic indicator (e.g., sundial, etc.)
Description: Device including an element which by the position or length of its shadow cast upon a dial or surface indicates the time of day.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7114262 |
Sundial with standard time display |
Oct. 3, 2006 |
| 7106660 |
Sun dial and method for determining average sunlight |
Sep. 12, 2006 |
| 6871407 |
Equatorial sundial with simple time and date interpretation |
Mar. 29, 2005 |
| 6810594 |
Astronomical, particularly solar and/or lunar, goniometric indicator |
Nov. 2, 2004 |
| 6680877 |
Solar night splitter and event timer |
Jan. 20, 2004 |
| 6612041 |
Diurnal solar event triggering mechanism |
Sep. 2, 2003 |
| 6604290 |
Sidereal sundial |
Aug. 12, 2003 |
| 6523270 |
Universal heliodon-sundial |
Feb. 25, 2003 |
| 6367158 |
Sundial |
Apr. 9, 2002 |
| 6308427 |
Horizontal sundial adjustable for accurate reading at multiple latitudes |
Oct. 30, 2001 |
| 6301793 |
Equatorial sundial apparatus utilizing one or more concave cylindrical focusing mirrors |
Oct. 16, 2001 |
| 6208315 |
Antenna for reception of satellite broadcast |
Mar. 27, 2001 |
| 6009628 |
Triple projection surface sundial |
Jan. 4, 2000 |
| 5977922 |
Satellite antenna alignment device |
Nov. 2, 1999 |
| 5732473 |
Holographic sundial |
Mar. 31, 1998 |
| 5596553 |
Digital sundial |
Jan. 21, 1997 |
| 5590093 |
Digital sundial |
Dec. 31, 1996 |
| 5459931 |
Direction indicator |
Oct. 24, 1995 |
| 5265345 |
Universal sun-clock |
Nov. 30, 1993 |
| 5197199 |
Reflected spot sundial |
Mar. 30, 1993 |
| 5181324 |
Sundial |
Jan. 26, 1993 |
| 5097549 |
Beach towel with symmetrical tanning device |
Mar. 24, 1992 |
| 5062212 |
Sundial apparatus |
Nov. 5, 1991 |
| 5056232 |
Remote light source responsive visual time indicator |
Oct. 15, 1991 |
| 4945644 |
Hemispherical sundial with installation indicia |
Aug. 7, 1990 |
| 4924592 |
Plate sundial with installation indicia |
May. 15, 1990 |
| 4922619 |
Universal sundial |
May. 8, 1990 |
| 4890269 |
Heliochron |
Dec. 26, 1989 |
| 4856912 |
Combination beach towel and tote bag |
Aug. 15, 1989 |
| 4845853 |
Sundial |
Jul. 11, 1989 |
| 4835875 |
Cylindrical sundial with installation indicia |
Jun. 6, 1989 |
| 4785542 |
Sundial |
Nov. 22, 1988 |
| 4782472 |
Solar clock with digital time display |
Nov. 1, 1988 |
| 4656748 |
Sundial arrangement |
Apr. 14, 1987 |
| 4645354 |
Universal heliochronometer |
Feb. 24, 1987 |
| 4520572 |
Geographical sundial |
Jun. 4, 1985 |
| 4387999 |
Electronic sundial apparatus |
Jun. 14, 1983 |
| 4384408 |
Columnar sundial |
May. 24, 1983 |
| 4373270 |
Sundial |
Feb. 15, 1983 |
| 4355470 |
Equatorial sundial |
Oct. 26, 1982 |
| 4333243 |
Latitude finder |
Jun. 8, 1982 |
| 4255864 |
Sun clock |
Mar. 17, 1981 |
| 4135357 |
Solar chronometer |
Jan. 23, 1979 |
| 4103429 |
Sun and star time dial |
Aug. 1, 1978 |
| 4102054 |
Sundial |
Jul. 25, 1978 |
| 4081911 |
Sundial |
Apr. 4, 1978 |
| 4050161 |
True north meridian indicator |
Sep. 27, 1977 |
| 4028813 |
Sun compass |
Jun. 14, 1977 |
| 3947973 |
Navigation teaching aid |
Apr. 6, 1976 |
| 3940859 |
Unitary space transit |
Mar. 2, 1976 |
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