HG

Howard L. Griffiths

📍 Athol, ID: #4 of 13 inventorsTop 35%
🗺 Idaho: #5,199 of 8,810 inventorsTop 60%
Overall (All Time): #3,830,249 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5234018 Sewer check valve and cleanout apparatus Bruce Grachal, Michael R. Andrews, Rodney C. Freligh 1993-08-10