David J. Thum

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Roselle, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Exercise apparatus pedal mechanism
- Patent number 5,741,205
- Issue date Apr 21, 1998
- Life Fitness
- James W. Doll
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Exercise apparatus and method for simulating hill climbing
- Patent number 5,403,252
- Issue date Apr 4, 1995
- Life Fitness
- Tomas F. Leon
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Stair climbing exercise apparatus utilizing drive belts
- Patent number 5,238,462
- Issue date Aug 24, 1993
- Life Fitness
- Steven J. Cinke
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Exercise apparatus for simulating stair climbing
- Patent number 5,135,447
- Issue date Aug 4, 1992
- Life Fitness
- Chester F. Robards
- A63 - SPORTS GAMES AMUSEMENTS