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Patents for David I. McDonald
Patents 1 - 5 of 5
First set of recordsLast set of records
NumberDatePatenteeTitleType
3,141,349Jul. 21, 1964D.I. McDonaldBall Bearing Screw and Nut Mechanismmetalworking machine mechanisms
3,221,404Dec. 07, 1965D.I. McDonald, W.D. AverillCutting Tool Adaptertool changers and storage mechanisms
3,273,182Sep. 20, 1966D.I. McDonaldFeed Control Device to Feed Tool Spindle at Rate of Tool Advancemachine tool controls
3,599,279Aug. 17, 1971D.I. McDonaldClamping Mechanismcoolant apparatus
3,609,816Oct. 05, 1971D.I. McDonaldHydraulic Clamping Mechanismhydraulic apparatus
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