Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646379 | Attentuator for borehole acoustic waves | Chuar-Jian Hsu, Sergio Kostek, Abderrhamane Ounadjela | 1997-07-08 |
DJ
David Johnson
Overall (1997): #163,088 of 185,788Top 90%
1
Patents 1997