DH

David A. Huwaldt

📍 Arroyo Grande, CA: #91 of 174 inventorsTop 55%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #3,365,950 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7427704 Stringed instrument fingering guide — 2008-09-23