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Patents Granted on 1820-07-__
Patents 1 - 9 of 9
First set of recordsLast set of records
NumberDatePatenteeTitleType
3,212XJul. 05, 1820E. Hall (Hale)Water wheelwater wheels
3,213XJul. 06, 1820D. TomlinsonCurrying Knifecurrying knives
3,214XJul. 06, 1820J.W. JenkinsPloughsplows or ploughs
3,215XJul. 11, 1820C. RedhefferGaining power by cog wheels, etc.
3,216XJul. 18, 1820D. FiskBalance lever hydraulic machine
3,217XJul. 20, 1820B. SimmonsLinen spinning wheelspinner
3,218XJul. 28, 1820T. DakinDraw grinding gun barrelsgunsmith
3,219XJul. 28, 1820J.S. WrightPloughplows or ploughs
3,220XJul. 28, 1820M. Fowler (Fowler Mallby)Machine for hulling grain and ricemiller
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