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All Patents in class 241/76
Patents 1 - 3 of 3
First set of recordsLast set of records
2,117,300May 17, 1938J. CorserRock crushing machine
2,179,747Nov. 14, 1939P.C. MalmstenMeans for conveying aggregates in portable rock crusher machines
2,256,731Sep. 23, 1941G.C. WintherMeans for forming and segregating rock chips from aggregates
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