DH

Don Howard

📍 Rancho Palos Verdes, CA: #727 of 1,701 inventorsTop 45%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,261,570 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5769034 Device, system and method for on-line explosive deslagging Frank Zilka, Tim Zilka, Kurt Prouty 1998-06-23
4709580 Retroflective attitude determining system J. James Butts, Jr. 1987-12-01