DH

Douglas E. Herrick

PA Parker-Hannifin: 1 patents #643 of 1,656Top 40%
📍 Henryetta, OK: #15 of 35 inventorsTop 45%
🗺 Oklahoma: #6,781 of 12,736 inventorsTop 55%
Overall (All Time): #3,401,266 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7297267 Oil-sorbing filter element Donald R. Denton, Geary Lane, Kirby S. Mohr 2007-11-20