DH

David P. Harrell

AS American Standard: 1 patents #290 of 558Top 55%
📍 Metairie, LA: #258 of 530 inventorsTop 50%
🗺 Louisiana: #5,044 of 10,876 inventorsTop 50%
Overall (All Time): #3,967,206 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4639192 Propeller pitch controlling arrangement having a fuel economizing feature — 1987-01-27