DH

David D. Helfrick

HP HP: 1 patents #831 of 2,473Top 35%
📍 San Diego, CA: #445 of 1,672 inventorsTop 30%
🗺 California: #7,981 of 26,868 inventorsTop 30%
Overall (2005): #217,044 of 245,428Top 90%
1
Patents 2005

Issued Patents 2005

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6935714 Variable mapping of nozzle rows to decrease dot placement artifacts of an inkjet printhead Ronald A. Askeland, James A. Feinn, Jason R. Arbeiter, Jason Quintana 2005-08-30