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