HB

Henry W. Blackwell

DI Dresser Industries: 2 patents #2 of 56Top 4%
📍 Venus, TX: #1 of 1 inventorsTop 100%
🗺 Texas: #147 of 2,272 inventorsTop 7%
Overall (1982): #13,286 of 81,411Top 20%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4355443 Bowl and slips assembly with improved slip inserts — 1982-10-26
4317407 Swab cup having an internal reinforcing member — 1982-03-02