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Class Information
Number: 33/276
Name: Geometrical instruments > Straight-line light ray type > Multisight line
Description: Device including a plurality of means for directing the eye of an observer along different lines of sight without adjustment of parts.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7278217 |
Trigonometric teaching aid |
Oct. 9, 2007 |
| 7228634 |
Using viewing-angle-sensitive visual tags to determine angular orientation and/or location |
Jun. 12, 2007 |
| 7222430 |
Object locator sight |
May. 29, 2007 |
| 7140117 |
Dartboard positioning device and method |
Nov. 28, 2006 |
| 7124513 |
Three way laser indicator |
Oct. 24, 2006 |
| 6948252 |
Light projecting goniometer |
Sep. 27, 2005 |
| 6938350 |
Apparatus for producing a reference plane |
Sep. 6, 2005 |
| 6891148 |
Scaling device for photographic images |
May. 10, 2005 |
| 6877236 |
Optical measuring device system and method |
Apr. 12, 2005 |
| 6453568 |
Laser protractor |
Sep. 24, 2002 |
| 6449855 |
Laser aligning and measuring device |
Sep. 17, 2002 |
| 6279239 |
Device and a method for sizing odd parts of drywall for placement on ceilings and walls |
Aug. 28, 2001 |
| 6177987 |
Laser level |
Jan. 23, 2001 |
| 6065217 |
Laser rotary double crossliner |
May. 23, 2000 |
| 5933393 |
Laser beam projection survey apparatus with automatic grade correction unit |
Aug. 3, 1999 |
| 5864956 |
Level line and limb line combination |
Feb. 2, 1999 |
| 5839199 |
Laser gradient setting device |
Nov. 24, 1998 |
| 5606802 |
Laser gradient setting device |
Mar. 4, 1997 |
| 5257091 |
Optical alignment system for aligning a multiple gap tape head assembly |
Oct. 26, 1993 |
| 5218770 |
Surveying machine for construction work |
Jun. 15, 1993 |
| 5163230 |
Chalk line apparatus |
Nov. 17, 1992 |
| 5118184 |
Transit for establishing 90 degree angles |
Jun. 2, 1992 |
| 5007175 |
System for materializing a point in space, applications thereof and a tooling assembly for said system |
Apr. 16, 1991 |
| 4976039 |
Navigation aid |
Dec. 11, 1990 |
| 4967479 |
Position relocation device |
Nov. 6, 1990 |
| 4908948 |
Precision optical square instrument |
Mar. 20, 1990 |
| 4907881 |
Precision alignment device |
Mar. 13, 1990 |
| 4845856 |
Method and apparatus for aligning equipment on board a carrier vehicle and particularly on board an aircraft |
Jul. 11, 1989 |
| 4537509 |
Optical inspection and alignment verification system |
Aug. 27, 1985 |
| 4497117 |
Slope compensating angle gauge |
Feb. 5, 1985 |
| 4383372 |
Instant position finder and course plotter |
May. 17, 1983 |
| 4281928 |
Optical transit square with focusable crossing telescopes |
Aug. 4, 1981 |
| 4267637 |
Device for setting-up a baseball diamond |
May. 19, 1981 |
| 4245393 |
Instant position finder and course plotter |
Jan. 20, 1981 |
| 4232965 |
Optical sighting device |
Nov. 11, 1980 |
| 3946493 |
Drill sight for an electric hand drill |
Mar. 30, 1976 |
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