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Class Information
Number: 33/371
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Level or plumb, terrestrial gravitation responsive > Work, or workman, attaching means > Requiring no modification of the work
Description: Device adapted for attachment to the workpiece without any modification thereof.










Sub-classes under this class:

Class Number Class Name Patents
33/372 Elastic bias type clamping 34
33/373 Encircling clamp, loop, or strap 48


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8701305 Level Apr. 22, 2014
8671582 Tilt indicator Mar. 18, 2014
8646186 Multi-angle levels and plumbing methods Feb. 11, 2014
8621760 Hands-free measuring instrument Jan. 7, 2014
8484856 Device and method for measuring and adjusting the slope of a surface Jul. 16, 2013
8418375 Door hanging tool Apr. 16, 2013
8336221 Level Dec. 25, 2012
8061051 Clamping level tool Nov. 22, 2011
8011108 Leveling device Sep. 6, 2011
7913406 Hands-free measuring instrument Mar. 29, 2011
7856727 Independent position sensor and a system to determine the position of a tool on a works machine using position sensors Dec. 28, 2010
7802372 Removable laser base attachment for bubble levels Sep. 28, 2010
7739804 Hands-free long level Jun. 22, 2010
7690124 Self-supporting stud finder with line-laser Apr. 6, 2010
7685724 Leveling device Mar. 30, 2010
7552540 Flange slot magnet mount for an I-beam level Jun. 30, 2009
7520065 Level with integral clamp for mounting conduit apparatus and method Apr. 21, 2009
7308766 Satellite antenna alignment device and method Dec. 18, 2007
7254920 Tile-leveling device Aug. 14, 2007
7171755 Picture hanging level Feb. 6, 2007
7137209 Level and protractor Nov. 21, 2006
7089676 Attaching level Aug. 15, 2006
7036235 Vertical alignment device May. 2, 2006
7007534 Methods for production of continuous stretches of circular cylindrical members, tools, use of a tool, a length of pipe and pipe parts Mar. 7, 2006
6996911 Combination level and squaring tool Feb. 14, 2006
6935035 Slopemaster Aug. 30, 2005
6880258 Digital inclinometer and related methods Apr. 19, 2005
6839973 Multiple axis leveling device Jan. 11, 2005
6818824 Wiring device ganging tool Nov. 16, 2004
6752370 Concrette curb form spacer Jun. 22, 2004
6748665 Illuminated spirit level Jun. 15, 2004
6732445 Pipe fitting apparatus, method, and product-by process for taking simultaneous linear and angular measurements May. 11, 2004
6711827 Conduit bending guide Mar. 30, 2004
6691421 Universal non-electronic multi-sectional gradient meter and inclinometer and method of use Feb. 17, 2004
6640456 Level with attachments Nov. 4, 2003
6631564 Electricians leveling device Oct. 14, 2003
6550156 Pipe fitting apparatus, method, and product-by process for taking simultaneous linear and angular measurements Apr. 22, 2003
6543148 Level with plumb alignment features Apr. 8, 2003
6532675 Device for measuring the angle of orientation with reference to a known frame of reference between a first object having a first axis and a second remote destination Mar. 18, 2003
6532676 Laser leveler Mar. 18, 2003
6526668 Electronic level Mar. 4, 2003
6507988 Automotive wheel camber alignment apparatus and method of aligning automotive wheels Jan. 21, 2003
6305092 Level with plumb alignment features Oct. 23, 2001
6205669 Wall hanging level Mar. 27, 2001
6173502 Magnetically engagable level sensing apparatus and standoff Jan. 16, 2001
6163969 3D laser leveler Dec. 26, 2000
6138368 Sprinkler head leveler Oct. 31, 2000
6138369 Level indicator for a wall-mounted fixture Oct. 31, 2000
6098298 Level Aug. 8, 2000
6076269 Steering wheel centering tool Jun. 20, 2000

1 2 3










 
 
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