Raymond J. Prohaska

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East Northport, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Portable friction resistant exercise device
- Patent number 4,871,165
- Issue date Oct 3, 1989
- Marshall; Howard B.
- Howard B. Marshall
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Portable friction resistant exercise device
- Patent number 4,779,866
- Issue date Oct 25, 1988
- Marshall; Howard B.
- Howard B. Marshall
- A63 - SPORTS GAMES AMUSEMENTS