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Class Information
Number: 33/451
Name: Geometrical instruments > Straightedge type > Combined with level
Description: Subject matter having means to assist in the alignment of the straightedge with respect to the direction of the force of gravity comprising gravity indicating means.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8661698 Spirit level Mar. 4, 2014
8621760 Hands-free measuring instrument Jan. 7, 2014
8615892 Apparatus and methods for level and/or straight edge tools Dec. 31, 2013
8516708 Rolling ruler Aug. 27, 2013
8413342 Level with a magnet-mounting structure Apr. 9, 2013
8375591 Box level Feb. 19, 2013
8336221 Level Dec. 25, 2012
8291605 Box level Oct. 23, 2012
8291604 Box level Oct. 23, 2012
8286363 Screw mount placement device Oct. 16, 2012
8261462 Picture hanging, positioning and leveling device Sep. 11, 2012
8256125 Sliding square for tape measure Sep. 4, 2012
8151476 Illuminated device for checking an orientation to horizontal Apr. 10, 2012
8087177 Level Jan. 3, 2012
8056249 Apparatus and methods for level and/or straight edge tools Nov. 15, 2011
8046929 Stretch level Nov. 1, 2011
8011109 Casing mount for a cylindrical vial Sep. 6, 2011
7975395 Hand-held level and plumb tool Jul. 12, 2011
7913406 Hands-free measuring instrument Mar. 29, 2011
7908754 Linear marking apparatus Mar. 22, 2011
7882643 Square and leveling tool Feb. 8, 2011
7866055 Level provided with impact-absorbing end caps Jan. 11, 2011
7814675 Apparatus and method for aiding in hanging an object on a wall Oct. 19, 2010
7802372 Removable laser base attachment for bubble levels Sep. 28, 2010
7797848 Folding carpenter's level Sep. 21, 2010
7770298 Securement arrangement for a level end cap Aug. 10, 2010
7698827 Bevel setter Apr. 20, 2010
7690129 Easy centering hanging level Apr. 6, 2010
7631436 Spirit level Dec. 15, 2009
7607235 Apparatus and methods for level and/or straight edge tools Oct. 27, 2009
7562463 Combination level and square Jul. 21, 2009
7536798 Multiple angle compact spirit level May. 26, 2009
7536801 Laser leveling device May. 26, 2009
7513055 Slope Level Apr. 7, 2009
7513056 Spirit level with sliding measurement system Apr. 7, 2009
7509749 Wave configuration for the web of a level frame Mar. 31, 2009
7503124 Tool with non-slip feature or friction assembly Mar. 17, 2009
7484307 Level with uninterrupted marking surface with high-visibility center vial Feb. 3, 2009
7409772 Apparatus and methods for level and/or straight edge tools Aug. 12, 2008
7363719 Pocket level Apr. 29, 2008
7360316 Level Apr. 22, 2008
7340841 Slope level Mar. 11, 2008
7316074 Level Jan. 8, 2008
7302763 Adjustable jig for use when installing bargeboards Dec. 4, 2007
7299560 Multi-purpose tool Nov. 27, 2007
7281335 Carpenter's level Oct. 16, 2007
7243436 T-bevel plumb tool Jul. 17, 2007
7228637 Impact-absorbing end caps for levels Jun. 12, 2007
7204029 Level Apr. 17, 2007
7204030 Laser tool Apr. 17, 2007

1 2 3 4 5










 
 
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