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All Patents of Type: levels
Patents 1 - 15 of 382
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NumberDatePatenteeTitleType
6,726XAug. 25, 1831J.E. EldredLevel and plumb instrumentlevels
8,631XFeb. 11, 1835J. EamesSurveyor's Theodolitesurveyor
956Oct. 03, 1838L. LewisBalance and Pendulum Level and Plumbpendulum levels
1,403Nov. 09, 1839R. FishApparatus for grading streets and roadslevels
4,611Jul. 02, 1846A. GirardPlumb-Levellevels
6,097Feb. 06, 1849S.A. Abbott, E. ElicottLevel-scale for canals, railroads, &c.levels
7,263Apr. 09, 1850W.G. Ladd, Jr.Fluid Levelinclinometers
7,477Jul. 02, 1850J. LockeCollimating Levellevels
NS-14Jul. 12, 1851A. ChisholmImproved spirit levelspirit levels
8,897Apr. 20, 1852F. WilbarImproved Reflecting Spirit Level and Squarelevels
9,722May 17, 1853T.A. ChandlerPendulum Levelinclinometers
9,867Jul. 19, 1853S.J. ShermanPocket Levellevels
11,596Aug. 29, 1854L. BrooksInclinometerinclinometers
11,841Oct. 24, 1854J. ShanklinSquare, Scale, Level, and Bevelsquares
12,384Feb. 13, 1855H.W. EvansSpirit Levelinclinometers
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