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All Patents of Type: boring heads
Patents 1 - 6 of 6
First set of recordsLast set of records
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
1,696,195Dec. 25, 1928A.F. FroussardCutter Headboring heads
1,962,951Jun. 12, 1934M.C. ConwellTool Headboring heads
3,599,517Aug. 17, 1971J. MüllerBoring and facing head for machine toolsboring heads
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