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All Patents in class 33/388
Patents 1 - 15 of 59
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NumberDatePatenteeTitleType
4,611Jul. 02, 1846A. GirardPlumb-Levellevels
11,596Aug. 29, 1854L. BrooksInclinometerinclinometers
12,384Feb. 13, 1855H.W. EvansSpirit Levelinclinometers
20,943Jul. 20, 1858W.O. FritschlerCarpenter's Rulefolding rules
38,252Apr. 21, 1863F.A. TrautImprovement in Combined Plumb and Levelsinclinometers
44,225Sep. 13, 1864H.S. ShepardsonImprovement in Spirit-Levelslevels
49,710Sep. 05, 1865R.T. BurnettReplacable Level Vialslevel adjustments
56,013Jul. 03, 1866W.W. CooperGoniometergoniometers
65,726Jun. 11, 1867P. CliffordImprovement in combined level and plumblevels
68,961Sep. 17, 1867L.L. DavisImprovement in Adjustable Spirit Levelsmetallic levels
71,279Nov. 26, 1867P. CliffordImprovement in Adjustable Spirit Levelsinclinometers
72,159Dec. 17, 1867S.A. BostwickPlumb & Levelplumbs
73,391Jan. 14, 1868H. SchüsslerChain-Inclinometerinclinometers
84,880Dec. 15, 1868C.F. HillSpirit Levelspirit levels
226,723Apr. 20, 1880F.C. DavidsonClinometerclinometers
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