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Patents for Samuel Hall
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
7,779XNov. 01, 1833S. HallSteam engines, lubricating the pistons, piston rods, valves, cocks, etc.steam engines
8,477XOct. 30, 1834S. HallLubricating pistons of steam enginessteam engine lubricators
8,478XOct. 30, 1834S. HallSteam enginesteam engines
5,529Apr. 25, 1848S. HallPlowplows
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