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All Patents of Type: center squares
Patents 1 - 15 of 18
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NumberDatePatenteeTitleType
9,089Jul. 06, 1852N. AmesCenter Square for Finding the Center of a CIrclecenter squares
82,917Oct. 13, 1868G.W. BrooksCentering Squarecenter squares
229,283Jun. 29, 1880L.S. StarrettTry Squarecenter squares
249,821Nov. 22, 1881S.H. BellowsCombination Squarecenter squares
265,287Oct. 03, 1882W.H. SleeperCentering Try Squarecenter squares
329,892Nov. 10, 1885J.C. EckertCombined Gage and Center Squarecenter squares
407,285Jul. 16, 1889C. EnsmingerCombined Square, Level, Protractor, &c.combination tools
535,223Mar. 05, 1895W.S. RowellMeasuring and Drawing Instrumentcenter squares
659,513Oct. 09, 1900A.P. DubusSquaremiter squares
705,867Jul. 29, 1902H.H. RichardsonCombination Square and Levelbevel squares
713,096Nov. 11, 1902J.O. HessCombination Toolmeasurement gauges
786,824Apr. 11, 1905R.C. LynnSquaretry squares
798,695Sep. 05, 1905E. OehrleCombination Square and Protractorprotractors
855,338May 28, 1907M.C. RaymondCombination Toolcenter squares
1,262,434Apr. 09, 1918W.E. BeeckScriber Attachmentcurve marking gauges
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