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All Patents of Type: protractors
Patents 1 - 15 of 122
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NumberDatePatenteeTitleType
1,197XJan. 19, 1810E. WilliamsUniversal protractorprotractors
2,279XMar. 14, 1815B. OtisPerspective protractorprotractors
3,413XDec. 04, 1821G.H. ThompsonProtractorsprotractors
3,794XDec. 24, 1823N. GoodwinRectangular protractorprotractors
6,034XJun. 16, 1830I. PoolProtractorprotractors
7,695XAug. 01, 1833E. BrownFacilitating protractorprotractors
7,817XNov. 19, 1833B.J. LewisTailor's Square and Measuresquares
15,183Jun. 24, 1856C.R. IliffDrafting Protractorsprotractors
20,356May 25, 1858J. LymanProtractorprotractors
31,987Apr. 09, 1861R.B. LightMachinist's Squaresquares
45,535Dec. 20, 1864H. TaylorParallel Rule with Protractorrules
48,454Jun. 27, 1865S.L. SimpsonImprovement in Rulersrules
52,616Feb. 13, 1866U. SmithCombination Parallel Rule and Squarerules
53,397Mar. 27, 1866W.W. Branch, Jr.Combination Bevel and Protractorbevels
65,631Jun. 11, 1867D.A. BaileyImprovement in Combination Squaressquares
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