Donald L. Johannsen

📍 Phoenix, AZ: #41 of 155 inventorsTop 30%

🗺 Arizona: #110 of 528 inventorsTop 25%

Overall (1982): #68,752 of 81,411Top 85%

Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4351163	Air conducting mechanism	—	1982-09-28