John Hagen

UN Unknown: 1 patents #29,356 of 83,584Top 40%

📍 Phoenix, AZ: #2,590 of 6,660 inventorsTop 40%

🗺 Arizona: #13,050 of 32,909 inventorsTop 40%

Overall (All Time): #2,142,968 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
7327109	Adjustable bridge for acoustic stringed instruments	—	2008-02-05
4745808	Measurement apparatus utilizing sonar waves	—	1988-05-24