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All Patents in class 451/377
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
205,416Jun. 25, 1878L.D. Dana, F.D. RandallImprovement in Grinding-Machinesgrinders
354,690Dec. 21, 1886H. ClearyTool-holder for grindstonesbench or pedestal grinders
425,781Apr. 15, 1890W.D. Graves, Jr.Knife-grinding machinesharpening machines
523,908Jul. 31, 1894C.N. SlyMachine for Sharpening Shears
734,799Jul. 28, 1903J.S. BancroftTool Grinding Machinetool grinders
2,432,058Dec. 02, 1947C.A. Wiken, E.A. ReibigSurface grinder
3,181,283May 04, 1965P.B. TuttleMeans for cutting chip breaker grooves
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