Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873488 | Induction logging sonde with metallic support having a coaxial insulating sleeve member | Thomas D. Barber, Richard N. Chandler | 1989-10-10 |
JH
John F. Hunka
Overall (1989): #94,859 of 140,708Top 70%
1
Patents 1989