DH

Donald F. Hushbeck

HS Halliburton Services: 2 patents #1 of 10Top 10%
📍 Duncan, OK: #5 of 41 inventorsTop 15%
🗺 Oklahoma: #42 of 552 inventorsTop 8%
Overall (1982): #14,926 of 81,411Top 20%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4324293 Circulation valve 1982-04-13
4311197 Annulus pressure operated closure valve with improved reverse circulation valve 1982-01-19