DH

Douglas P. Hand

📍 Lake Oswego, OR: #8 of 81 inventorsTop 10%
🗺 Oregon: #337 of 2,269 inventorsTop 15%
Overall (2003): #69,652 of 273,478Top 30%
2
Patents 2003

Issued Patents 2003

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6658673 Toilet valve assembly 2003-12-09
6637042 Toilet valve assembly 2003-10-28