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| US3990144 | 12 Feb 1976 | 9 Nov 1976 | | Suture cutter and removal means |
| US4198751 | 11 Dec 1978 | 22 Apr 1980 | | Skinning knife |
| US4848341 | 25 Nov 1987 | 18 Jul 1989 | | Suture cutter |
| US5412871 | 17 Aug 1994 | 9 May 1995 | | Safety stock carton knife |
| US5423842 | 1 Nov 1993 | 13 Jun 1995 | | Spinal microknife |
| US5539983 | 23 Feb 1995 | 30 Jul 1996 | | Safety stock carton knife |
| US6182364 | 1 Sep 1998 | 6 Feb 2001 | | Safety stock carton knife tip assembly and method of making |
| US6471577 | 16 Nov 2000 | 29 Oct 2002 | | Precision micro cutting system |
| US8152606 | 19 Jun 2008 | 10 Apr 2012 | | Skinning knife |
