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All Patents in class 74/44
Patents 1 - 15 of 61
First set of recordsNext set of recordsLast set of records
NumberDatePatenteeTitleType
7,919XDec. 31, 1833I. BrewsterChurnchurns
4,289Nov. 26, 1845R.F. LoperReciprocating Steam Enginesteam engines
6,073Jan. 23, 1849S. Jack, IICombined Spring Rock-Drilling Machinestone boring and drilling machines
49,593Aug. 22, 1865H. ShattuckImproved Atmospheric Hammerpower hammers
54,413May 01, 1866J. RobertsonImproved Atmospheric Hammerspower hammers
64,567May 07, 1867T.F. PrestonPower Hammerpower hammers
68,740Sep. 10, 1867T.B. HarrisonPower Hammerpower hammers
78,443Jun. 02, 1868A.R. EhlersImprovement in sawmillsreciprocating sawmills
129,996Jul. 30, 1872L. SwensonImprovement in Crank-Expanderssteam engine crank rods
131,236Sep. 10, 1872E. WallaceImprovement in mortising-machinesmortising machines
139,233May 27, 1873I. BrownImprovement in reciprocating steam-engines and saw-mills combinedcircular sawmills
184,419Nov. 14, 1876G.A. OhlMetal-Shaping Machinemetal shapers
190,441May 08, 1877W.J. LiddellImprovement in steam-enginessteam engines
226,972Apr. 27, 1880E. BussGas-Enginegas and gasoline engines
252,111Jan. 10, 1882C.E. McBeth, J.M. LongPunching-machinemetal punching machines
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