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All Patents in class 241/81
Patents 1 - 5 of 5
First set of recordsLast set of records
4,403XApr. 18, 1826M. StockmanImrovement on Bicknell's grist millgrist mills
338,221Mar. 16, 1886W.R. EynonGrinding-millcorn grinders
2,117,300May 17, 1938J. CorserRock crushing machine
2,210,093Aug. 06, 1940S.J. MorrisseyMaterial handling device
2,256,731Sep. 23, 1941G.C. WintherMeans for forming and segregating rock chips from aggregates
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