Referenced by|
| US4501421 | 18 Aug 1982 | 26 Feb 1985 | | Foot and leg exercising device | | US4892305 | 21 Dec 1987 | 9 Jan 1990 | | Exercising device | | US5342259 | 1 Mar 1993 | 30 Aug 1994 | | Starting block | | US5707322 | 29 Jul 1996 | 13 Jan 1998 | Concept II, Inc. | Exercise machine | | US5722919 | 30 Aug 1996 | 3 Mar 1998 | | Ankle rehabilitation and conditioning device | | US6231485 | 14 Apr 1999 | 15 May 2001 | Concept II, Inc. | Exercise machine | | US6371892 | 25 Nov 1997 | 16 Apr 2002 | Concept II, Inc. | Exercise machine | | US6425844 | 25 Feb 2000 | 30 Jul 2002 | | Knee exercising device | | US6821235 | 28 Oct 2002 | 23 Nov 2004 | | Ankle exercise device | | US6935991 | 7 May 2004 | 30 Aug 2005 | | Means and method of exercising feet and legs of bedridden patient | | USD367508 | 28 Feb 1994 | 27 Feb 1996 | Concept II, Inc. | Rowing machine |
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