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Patents Granted on 1831-04-??
Patents 1 - 15 of 92
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NumberDatePatenteeTitleType
6,440XApr. 01, 1831J. Tousey (Tonsey), G. CandeThrashing machinethreshers and thrashers
6,441XApr. 01, 1831H. KnowlesImproved mode of manufacturing wood-screwsscrew machines
6,442XApr. 01, 1831J. PowellWashing gold ores and alluvial auriferous earth
6,443XApr. 04, 1831C. MadisonCircular saw for sawing lathscircular saws
6,444XApr. 05, 1831M.D. MulfordWashing machinewashing machines
6,445XApr. 05, 1831R. WilcoxMetallurgical operations by chemical agentstrade specific
6,446XApr. 05, 1831R. WilcoxMetallurgical operations by anthracite coaltrade specific
6,447XApr. 05, 1831R. WilcoxMetallurgical operatons by bituminous coal, charcoaltrade specific
6,448XApr. 06, 1831J. AmesMachine for washing ragswashing machines
6,449XApr. 06, 1831S. BoydenManufacturing malleable cast irontrade specific
6,450XApr. 06, 1831S. LaneThrashing machinethreshers and thrashers
6,451XApr. 06, 1831R. Tenney, E. MudgeScoop shovelshovels
6,452XApr. 06, 1831J. ScottGlass frame for pictures
6,453XApr. 06, 1831W.A. TurnerPreventing explosion of boilers and burningstationary boilers
6,454XApr. 07, 1831R.M. BeachBoiling liquids of all kinds
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