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Patents

Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US404192724 Jul 197516 Aug 1977Archery bow with pivoted bow limbs having rotational synchronizer and adjustable draw force mechanisms
US422768924 Jul 197814 Oct 1980Kintron, IncorporatedExercising device including linkage for control of muscular exertion required through exercising stroke
US439746226 Jun 19819 Aug 1983Pneumatic exercising device
US446527427 Sep 198214 Aug 1984Hydraulic exercise device
US449614712 Mar 198229 Jan 1985Arthur D. Little, Inc.Exercise stair device
US457637715 Aug 198518 Mar 1986Athletic exerciser assembly
US46452058 Jul 198524 Feb 1987Athletic exerciser for paraplegics and quadriplegics
US466795530 Apr 198526 May 1987Hydraulic universal gym
US48487392 Feb 198818 Jul 1989Hydraulic exercise machine
US497973622 Mar 198925 Dec 1990Titan Fitness Products Pty. Ltd.Hydraulic gymnasium equipment
US506419313 Nov 198912 Nov 1991Walker Fitness Systems, Inc.Automatic force generating and control system
US507293226 Feb 199117 Dec 1991Exercise apparatus
US520971421 Oct 199111 May 1993Walker Fitness Systems, Inc.Automatic force generating and control system
US533040610 Jun 199319 Jul 1994Hydraulic exercise apparatus
US538552412 May 199331 Jan 1995Exercise device
US549995912 Jul 199419 Mar 1996StairMaster Sports/Medical Products, Inc.Upper body exercise apparatus
US554063921 Sep 199330 Jul 1996StairMaster Sports/Medical Products, Inc.Device to prevent arcuate motion of a user assist platform for an upper body exercise apparatus

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