Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4810876 | Logging apparatus and method for determining absolute elemental concentrations of subsurface formations | Peter Wraight, Russel C. Hertzog, Darwin V. Ellis, Hubert D. Scott, Jeffrey S. Schweitzer | 1989-03-07 |