Frederick M. J. Levenston

📍 Inglewood, CA: #47 of 200 inventorsTop 25%

🗺 California: #185,134 of 386,348 inventorsTop 50%

Overall (All Time): #2,330,902 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
D301270	Neck exerciser frame	—	1989-05-23
4645198	Neck exercising device	—	1987-02-24