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Class Information
Number: 33/365
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Level or plumb, terrestrial gravitation responsive
Description: Device responsive to terrestrial gravitation and establishing either a horizontal or a vertical direction.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7409772 |
Apparatus and methods for level and/or straight edge tools |
Aug. 12, 2008 |
| 7377046 |
Inclination sensor and azimuth measuring apparatus using inclination sensor |
May. 27, 2008 |
| 7360316 |
Level |
Apr. 22, 2008 |
| 7313871 |
Archery sight |
Jan. 1, 2008 |
| 7243435 |
Level device and method of calibrating a level vial |
Jul. 17, 2007 |
| 7228637 |
Impact-absorbing end caps for levels |
Jun. 12, 2007 |
| 7150106 |
Method of using a level |
Dec. 19, 2006 |
| 7150107 |
Structure and method for holding and protecting vials in levels |
Dec. 19, 2006 |
| 7131209 |
Apparatus for measuring horizontal level of a wafer chuck |
Nov. 7, 2006 |
| 7117606 |
Pocket-sized leveling tool |
Oct. 10, 2006 |
| 7073270 |
Impact-absorbing end caps for levels |
Jul. 11, 2006 |
| 6988320 |
Level |
Jan. 24, 2006 |
| 6976316 |
Magnetic plumb bob holder |
Dec. 20, 2005 |
| 6941666 |
Forklift mast position indicator |
Sep. 13, 2005 |
| 6918187 |
Multi plane plumb level |
Jul. 19, 2005 |
| 6912794 |
Bricklayer's combination level and plumb |
Jul. 5, 2005 |
| 6877240 |
Apparatus for indicating correct or faulty back posture |
Apr. 12, 2005 |
| 6792686 |
Level |
Sep. 21, 2004 |
| 6675490 |
Level |
Jan. 13, 2004 |
| 6655036 |
Aid apparatus for level surveying instrument |
Dec. 2, 2003 |
| 6640455 |
Sliding adjustable track level |
Nov. 4, 2003 |
| 6615500 |
Door jamb square |
Sep. 9, 2003 |
| 6594912 |
Electronic plumb indicator for monopoles, survey poles, global positioning antennas and the like |
Jul. 22, 2003 |
| 6539640 |
Plumb bob system |
Apr. 1, 2003 |
| 6449856 |
Laser plumbing device, long member plumbing device and long member plumbing method |
Sep. 17, 2002 |
| 6442853 |
Door jamb square |
Sep. 3, 2002 |
| 6434842 |
Rasping level |
Aug. 20, 2002 |
| 6430824 |
Screed system for walls |
Aug. 13, 2002 |
| 6427348 |
Slope block |
Aug. 6, 2002 |
| 6418634 |
Spirit level with hand grips |
Jul. 16, 2002 |
| 6385857 |
Position detectors, methods of detecting position, and methods of providing positional detectors |
May. 14, 2002 |
| 6381859 |
Water level |
May. 7, 2002 |
| 6370784 |
Tiltmeter leveling mechanism |
Apr. 16, 2002 |
| 6367408 |
En route rage sensing apparatus |
Apr. 9, 2002 |
| 6341428 |
Tilt detecting device |
Jan. 29, 2002 |
| 6324767 |
Sight level |
Dec. 4, 2001 |
| 6301795 |
Tilt sensor using magnet and magnetic sensor |
Oct. 16, 2001 |
| 6279243 |
Apparatus for indicating correct or faulty back posture |
Aug. 28, 2001 |
| 6219926 |
Ruler for measuring and marking lengths and angles relative to a horizontal plane utilizing gravity |
Apr. 24, 2001 |
| 6115929 |
Tilt detecting device |
Sep. 12, 2000 |
| 6073355 |
Method for inclination measurement using piezoelectric effect |
Jun. 13, 2000 |
| 6012229 |
Combined leveling device and laser pointer |
Jan. 11, 2000 |
| 6009630 |
Reference laser projector with optional self-leveling mode |
Jan. 4, 2000 |
| 5992032 |
Method and apparatus for inclination measurement using piezoelectric effect |
Nov. 30, 1999 |
| 5966826 |
Dual usage level marking instrument |
Oct. 19, 1999 |
| 5873172 |
Cant angle measurement device |
Feb. 23, 1999 |
| 5841353 |
Relating to the determination of verticality in tall buildings and other structures |
Nov. 24, 1998 |
| 5826345 |
Susceptor leveling aid |
Oct. 27, 1998 |
| 5822873 |
Device for determining cants for skiers and method of use |
Oct. 20, 1998 |
| 5765290 |
Adaptable tip sensor |
Jun. 16, 1998 |
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