DH

Darrel D. Hillman

📍 Weatherford, TX: #4 of 12 inventorsTop 35%
🗺 Texas: #1,517 of 5,943 inventorsTop 30%
Overall (1997): #163,278 of 185,788Top 90%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5616012 Ammonia pump Charles T. Russell 1997-04-01