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Class Information
Number: 33/282
Name: Geometrical instruments > Straight-line light ray type > Vertical angle
Description: Device for measuring an angle which is in a plane perpendicular to the plane of the horizon.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7107980 |
Carpenter's marking device |
Sep. 19, 2006 |
| 7031367 |
Laser level |
Apr. 18, 2006 |
| 6854191 |
Alignment laser projection system |
Feb. 15, 2005 |
| 6782034 |
Laser plumbing and leveling instrument which adjusting height of horizontal line |
Aug. 24, 2004 |
| 6694630 |
Multiple-axis laser emitter with optical beam splitter |
Feb. 24, 2004 |
| 6625895 |
Servo-controlled automatic level and plumb tool |
Sep. 30, 2003 |
| 6604293 |
Surveying instrument and a method for drive control thereof |
Aug. 12, 2003 |
| 6449856 |
Laser plumbing device, long member plumbing device and long member plumbing method |
Sep. 17, 2002 |
| 6279239 |
Device and a method for sizing odd parts of drywall for placement on ceilings and walls |
Aug. 28, 2001 |
| 6253457 |
Laser beam direction correcting optical system for a surveying instrument |
Jul. 3, 2001 |
| 6163969 |
3D laser leveler |
Dec. 26, 2000 |
| 5842282 |
Laser angle adjustment device for laser measuring instruments |
Dec. 1, 1998 |
| 5784793 |
Marking template for construction lasers |
Jul. 28, 1998 |
| 5718054 |
Device for displaying a center point of a laser beam in a vertical-degree measuring system |
Feb. 17, 1998 |
| 5644850 |
Laser plumb device |
Jul. 8, 1997 |
| 5509209 |
Laser plumbing device |
Apr. 23, 1996 |
| 5450675 |
Method and apparatus for vertically aligning a structure |
Sep. 19, 1995 |
| 5159401 |
Elevation-angle sensing, celestial navigation and surveying |
Oct. 27, 1992 |
| 5044086 |
Drum screw with measuring drum for a sextant |
Sep. 3, 1991 |
| 5031327 |
Apparatus for fine adjustment of a sextant |
Jul. 16, 1991 |
| 4972592 |
Sextant with adjustable handle |
Nov. 27, 1990 |
| 4958927 |
Optical angle measuring instrument |
Sep. 25, 1990 |
| 4696111 |
Device for assessing inclination |
Sep. 29, 1987 |
| 4455758 |
Bearing means for angle measuring instruments |
Jun. 26, 1984 |
| 4428671 |
Optical device for vertically positioning a sextant |
Jan. 31, 1984 |
| 4364183 |
Heliostat-adjusting solar sight |
Dec. 21, 1982 |
| 4214373 |
Grade checker |
Jul. 29, 1980 |
| 4197653 |
Electronic sextant |
Apr. 15, 1980 |
| 3959888 |
Precise indexing detent |
Jun. 1, 1976 |
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