Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646379 | Attentuator for borehole acoustic waves | David Johnson, Sergio Kostek, Abderrhamane Ounadjela | 1997-07-08 |
CH
Chuar-Jian Hsu
Overall (1997): #168,278 of 185,788Top 95%
1
Patents 1997