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All Patents of Type: lapping machines
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,209,071Jul. 23, 1940E.J. BullardGrinding and Lapping Machinelapping machines
2,391,388Dec. 25, 1945E.J. BullardGrinding and Lapping Machinelapping machines
2,480,285Aug. 30, 1949E.J. BullardLapping Machinelapping machines
2,565,590Aug. 28, 1951E.J. BullardLapping Machinelapping machines
RE23,937Feb. 08, 1955B.B. Green, executrix, E.J. Bullard, deceased (estate of)Lapping Machinelapping machines
2,821,818Feb. 04, 1958W.S. Swanson, H.E. McGeeLapping Machine and Automatic Feed Mechanism Thereforlapping machines
2,842,906Jul. 15, 1958R.D. Ryan, L.E. CarterWork Holder for Lapping Machinelapping machines
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