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Class Information
Number: 33/379
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Level or plumb, terrestrial gravitation responsive > Liquid type, upper surface utilizing > Bubble
Description: Device wherein the liquid is within, and nearly filling, a closed receptacle, sufficient space being left superjacent the upper surface of the liquid to simulate a bubble.










Sub-classes under this class:

Class Number Class Name Patents
33/380 Adjustable size 1
33/389 Bubble-position indicia on reference-surface section 26
33/384 Liquid container adjustable on reference-surface section 45
33/381 Plural 57
33/390 Universal, or plural indicating sections on container 70


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8677636 Door installation tool and method Mar. 25, 2014
8677639 Ski pole with inclinometer Mar. 25, 2014
8671583 Alignment device Mar. 18, 2014
8661698 Spirit level Mar. 4, 2014
8646186 Multi-angle levels and plumbing methods Feb. 11, 2014
8375591 Box level Feb. 19, 2013
8327552 Vial for a spirit level Dec. 11, 2012
8322106 Column plumb stabilizer Dec. 4, 2012
8302320 Tool assembly Nov. 6, 2012
8291604 Box level Oct. 23, 2012
8291605 Box level Oct. 23, 2012
8286360 Tool assembly Oct. 16, 2012
8266809 Spirit level Sep. 18, 2012
8220171 Spirit level having horizontal bubble vial with improved bubble visibility Jul. 17, 2012
8109005 Dual-globe level Feb. 7, 2012
8011109 Casing mount for a cylindrical vial Sep. 6, 2011
7975393 Spirit level Jul. 12, 2011
7946045 Level tool May. 24, 2011
7937847 Precision level device May. 10, 2011
7900366 Illuminated level Mar. 8, 2011
7832112 Vial-mounting structure Nov. 16, 2010
7827699 Environmentally-friendly levels Nov. 9, 2010
7805849 Retractable line leveler for medical equipment Oct. 5, 2010
7802371 Level with magnetic device Sep. 28, 2010
7784193 Airlessly sealed vial Aug. 31, 2010
7779545 Spirit level Aug. 24, 2010
7775899 Method and apparatus for executing repeatable golf swings Aug. 17, 2010
7765706 Level Aug. 3, 2010
7735229 Level tool Jun. 15, 2010
7731709 Optical height zeroing device Jun. 8, 2010
7631436 Spirit level Dec. 15, 2009
7603961 Lighted orientation device Oct. 20, 2009
7568292 Level Aug. 4, 2009
7536797 Spirit level May. 26, 2009
7536798 Multiple angle compact spirit level May. 26, 2009
7513056 Spirit level with sliding measurement system Apr. 7, 2009
7484307 Level with uninterrupted marking surface with high-visibility center vial Feb. 3, 2009
7472486 Level with vial and manufacturing method therefor Jan. 6, 2009
7472487 Level Jan. 6, 2009
7467475 Leveling device Dec. 23, 2008
7464479 Level vial and manufacturing method therefor Dec. 16, 2008
7398600 Level with magnetic device Jul. 15, 2008
7360316 Level Apr. 22, 2008
7322118 Non-contact electronic level Jan. 29, 2008
7316074 Level Jan. 8, 2008
7263778 High contrast spirit-level vial Sep. 4, 2007
7243435 Level device and method of calibrating a level vial Jul. 17, 2007
7204029 Level Apr. 17, 2007
7150106 Method of using a level Dec. 19, 2006
7100295 Measuring device Sep. 5, 2006

1 2 3 4










 
 
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