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All Patents in class 33/387
Patents 1 - 14 of 14
First set of recordsLast set of records
NumberDatePatenteeTitleType
52,579Feb. 13, 1866R. LedigImprovement in Spirit-Levelsinclinometers
75,533Mar. 17, 1868L.L. DavisSpirit Levelinclinometers
151,173May 19, 1874J. ThornleyGrading Levelsinclinometers
306,429Oct. 14, 1884H.M. RichInclinometerinclinometers
596,279Dec. 28, 1897C.M. PotterLevellevels
655,561Aug. 07, 1900J. KurigLevel Quadrant for High Elevation Gunsinclinometers
785,581Mar. 21, 1905A.V. ShortsLevellevel adjustments
794,175Jul. 11, 1905A.P. HallAdjustable Level and Incinometerinclinometers
902,269Oct. 27, 1908J.D. WeaverSpirit-Levelinclinometers
1,006,818Oct. 24, 1911L.B. WordenLeveling and Plumbing instrumentlevels
1,265,823May 14, 1918A.J. SkjonsbyeLevellevels
1,539,543May 26, 1925R.A. CecchiniProtractor Levelinclinometers
2,206,817Jul. 02, 1940D.W. MannPrecision Spirit Levelmachinist levels
3,289,301Dec. 06, 1966O.O. HansonCarpenter's tool
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