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| US4586494 | 16 Nov 1983 | 6 May 1986 | National Research Development Corp. | Orthopaedic traction devices |
| US4674160 | 13 Aug 1985 | 23 Jun 1987 | | Power squat, multi-lifting weight apparatus |
| US4799675 | 7 Apr 1987 | 24 Jan 1989 | | Arm locking device for weightlifters |
| US4865022 | 19 Apr 1989 | 12 Sep 1989 | | Self applicable spring loaded pelvic traction device |
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| US5911696 | 19 Feb 1997 | 15 Jun 1999 | | Integral strap handling device for a leg cast |
| US7282039 | 18 Jan 2005 | 16 Oct 2007 | | Device for self administration of lumbar traction |
| USD273992 | 16 Nov 1981 | 22 May 1984 | | Anti-seasickness belt device |
| USRE32922 | 2 Apr 1987 | 16 May 1989 | Paul D. Levin | Blood sampling instrument |
