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All Patents in class 209/257
Patents 1 - 3 of 3
First set of recordsLast set of records
249,474Nov. 15, 1881J.C. Parish, A.W. McIntyreSawdust-elevatorwaste collection mechanisms
734,214Jul. 21, 1903C.H. BidwellThreshing Machinethreshers
2,256,731Sep. 23, 1941G.C. WintherMeans for forming and segregating rock chips from aggregates
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