B26F 1/34

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9808853 Jaw pair for punching out holesJul 27, 12Nov 07, 17GUSTAV KLAUKE GMBH
9615838 Trocar device with detachable handle and associated methodsJan 22, 16Apr 11, 17ECA MEDICAL INSTRUMENTS
9199389 Hydraulic hand-held knockout punch driverApr 11, 12Dec 01, 15MILWAUKEE ELECTRIC TOOL CORPORATION
6457243 Tool chuck for a hand-held power-driven punching machine or the likeJul 03, 01Oct 01, 02Kabushiki Kaisha Ogura
5340229 Combined multi-hole punch and rulerMar 19, 93Aug 23, 94McGill Incorporated