Russell W. Hellen

SP Soft Play: 1 patents #5 of 9Top 60%

📍 Charlotte, NC: #2,728 of 4,868 inventorsTop 60%

🗺 North Carolina: #26,533 of 45,564 inventorsTop 60%

Overall (All Time): #3,748,726 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5540636	Playground junction ball	—	1996-07-30