James N. Butterfield

📍 Pomona, CA: #3 of 22 inventorsTop 15%

🗺 California: #3,049 of 13,957 inventorsTop 25%

Overall (1994): #121,254 of 165,921Top 75%

Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5295271	Shoulder rest helmet	George Spector	1994-03-22