SV

Stephen H. Van Valkenburg

📍 Port Orchard, WA: #58 of 139 inventorsTop 45%
🗺 Washington: #48,111 of 76,902 inventorsTop 65%
Overall (All Time): #3,842,234 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5082403 Core-drilling apparatus with mandrel driver-ejector James L. Sutton 1992-01-21