John J. Schleffendorf

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Waukegan, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Body training device
- Patent number 4,648,594
- Issue date Mar 10, 1987
- John J. Schleffendorf
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Exercising system with cable, pulleys and weights
- Patent number 4,632,388
- Issue date Dec 30, 1986
- John J. Schleffendorf
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Weight guide for exercising machine
- Patent number 4,625,959
- Issue date Dec 2, 1986
- John J. Schleffendorf
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Weight lifting exerciser
- Patent number 4,515,363
- Issue date May 7, 1985
- John J. Schleffendorf
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Physical exercise apparatus
- Patent number 4,290,597
- Issue date Sep 22, 1981
- John J. Schleffendorf
- A63 - SPORTS GAMES AMUSEMENTS