David A. Rhoa

📍 Altoona, PA: #1 of 8 inventorsTop 15%

🗺 Pennsylvania: #989 of 4,367 inventorsTop 25%

Overall (1997): #184,538 of 185,788Top 100%

Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5639035	Sludge treatment unit	Thad S. Maugle	1997-06-17