Charles Michael Campbell

📍 Wylie, TX: #4 of 11 inventorsTop 40%

🗺 Texas: #885 of 4,134 inventorsTop 25%

Overall (1989): #126,899 of 140,708Top 95%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4819448	Evaporative cooler	Charles J. Bardo	1989-04-11