DH

D. Frank Howeth

EA E.I. Du Pont De Nemours And: 1 patents #169 of 718Top 25%
📍 Dallas, TX: #88 of 387 inventorsTop 25%
🗺 Texas: #1,330 of 5,527 inventorsTop 25%
Overall (1994): #147,146 of 165,921Top 90%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5322092 System for transfering used refrigerant from multiple small recovery cylinders to large shipping cylinder S. M. Tranchina 1994-06-21