Howard Grabhorn

📍 Tualatin, OR: #8 of 21 inventorsTop 40%

🗺 Oregon: #335 of 1,309 inventorsTop 30%

Overall (1997): #139,715 of 185,788Top 80%

Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5595458	Biofilter bags for erosion control	—	1997-01-21