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All Patents of Type: boring heads
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
757,494Apr. 19, 1904W. PohlmanExpansion Boring Toolboring heads
1,361,686Dec. 07, 1920M.C. ConwellToolboring heads
1,395,859Nov. 01, 1921H.V. MorinTool Holderboring heads
3,599,517Aug. 17, 1971J. MüllerBoring and facing head for machine toolsboring heads
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