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Class Information
Number: 33/349
Name: Geometrical instruments > Indicator of direction of force traversing natural media > With preselected direction indicator
Description: Device having means, in addition to the force responsive direction indicator, which is selectively positioned to indicate the desired orientation of some structure with respect to the indicated direction of the force.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7414921 |
Portable electronic device with radiofrequency signal receiver and method for determining the position of the same |
Aug. 19, 2008 |
| 7134213 |
Magic compass |
Nov. 14, 2006 |
| 7113451 |
Electronic watch having a compass function |
Sep. 26, 2006 |
| 6633813 |
Navigation system for supplementary representation of directional information |
Oct. 14, 2003 |
| 6282802 |
Hand-held needleless compass |
Sep. 4, 2001 |
| 6185157 |
Timepiece including a GPS receiver, arranged in particular, for indicating the direction of a "target" location |
Feb. 6, 2001 |
| 5995913 |
Method of stabilizing the horizon of magnetic compasses |
Nov. 30, 1999 |
| 5749150 |
Direction indicator for navigation |
May. 12, 1998 |
| 5701259 |
Method for stabilizing the directional display of magnetic compasses |
Dec. 23, 1997 |
| 5697162 |
Arrangement serving to indicate the direction of a given geographic location |
Dec. 16, 1997 |
| 5566462 |
True magnetic compass |
Oct. 22, 1996 |
| 5467532 |
Hedge trimmer aid |
Nov. 21, 1995 |
| 5388337 |
Angle orienting level apparatus |
Feb. 14, 1995 |
| 5383280 |
Direction indicator for navigation |
Jan. 24, 1995 |
| 5381603 |
Reference pointer for a compass display |
Jan. 17, 1995 |
| 5367781 |
Directional indicator |
Nov. 29, 1994 |
| 5173709 |
Electronic direction finder |
Dec. 22, 1992 |
| 4571843 |
Device for preventing error in a compass |
Feb. 25, 1986 |
| 4418480 |
Magnetic heading reference |
Dec. 6, 1983 |
| 4372052 |
Device for indicating direction to a predetermined locale |
Feb. 8, 1983 |
| 4357756 |
Magnetic compass |
Nov. 9, 1982 |
| 4341023 |
Digital compass |
Jul. 27, 1982 |
| 4255866 |
Nonmagnetic compass |
Mar. 17, 1981 |
| 4184267 |
Compass having a course directing pointer |
Jan. 22, 1980 |
| 4150491 |
Indicator of true wind direction for sail boats |
Apr. 24, 1979 |
| 4089118 |
Course indicator |
May. 16, 1978 |
| 4085514 |
Parallel wall indicator |
Apr. 25, 1978 |
| 4037328 |
Spatial orientation device |
Jul. 26, 1977 |
| 3975831 |
Directing instrument |
Aug. 24, 1976 |
| 3947970 |
Roll alignment gauge |
Apr. 6, 1976 |
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