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All Patents in class 408/145
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
6,399Apr. 24, 1849C. FossMachine for making grindstones
467,937Feb. 02, 1892E.E. Winkley, E.H. KavanaghStone Working Machinestoneworking tools
779,931Jan. 10, 1905A.T. Allcock, W. HarkerBoring Machinehorizontal boring mills
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