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Patents Granted on 1800-10-__
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
302XOct. 24, 1800R. MansfieldBrick Machinebrick maker
303XOct. 24, 1800A. BrookfieldRaising water for millswater elevators
304XOct. 24, 1800J.J. HawkinsImprovement in musical instrumentsmusic instrument maker
305XOct. 24, 1800J. Grout, Jr.Telegraphtelegraphy apparatus
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