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Class Information
Number: 33/375
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Level or plumb, terrestrial gravitation responsive > Relatively movable, coacting, reference-surface sections > Affecting level or plumb indication
Description: Device wherein the members are moveable in such a manner, that an imaginary line between the workpiece contact surfaces thereof will be shifted in its relationship to the level or plumb during such movement.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7086166 |
Spirit level with integrated inclination adjustment mechanism |
Aug. 8, 2006 |
| 6694632 |
Level |
Feb. 24, 2004 |
| 6658752 |
Extensible carpenter's level |
Dec. 9, 2003 |
| 6640455 |
Sliding adjustable track level |
Nov. 4, 2003 |
| 6550152 |
Adjustable spirit level for tile and cabinet installation |
Apr. 22, 2003 |
| 6427348 |
Slope block |
Aug. 6, 2002 |
| 6293023 |
Level |
Sep. 25, 2001 |
| 6293024 |
Leveling device |
Sep. 25, 2001 |
| 6279240 |
Extensible carpenter's level |
Aug. 28, 2001 |
| 6178649 |
Optical calibrating apparatus for emitting datum laser line |
Jan. 30, 2001 |
| 5488777 |
Utility line angle measurement device |
Feb. 6, 1996 |
| 5438761 |
Rotatable carpenter's level |
Aug. 8, 1995 |
| 4910876 |
Level attachment |
Mar. 27, 1990 |
| 4754553 |
One-man field survey instrument |
Jul. 5, 1988 |
| 4635376 |
Angle measuring apparatus |
Jan. 13, 1987 |
| 4617820 |
Level calibrating device |
Oct. 21, 1986 |
| 4607437 |
Adjustable level |
Aug. 26, 1986 |
| 4543731 |
Gradient measuring devices |
Oct. 1, 1985 |
| 4255865 |
Camber aligning tool |
Mar. 17, 1981 |
| 4067117 |
Grade checking tool |
Jan. 10, 1978 |
| 3947970 |
Roll alignment gauge |
Apr. 6, 1976 |
| 3939571 |
Method and apparatus for aiming aircraft visual approach slope indicator |
Feb. 24, 1976 |
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