Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4893285 | Method and apparatus for cement bond tool | Jean Pierre Masson, Robert A. Lester | 1990-01-09 |
| 4757479 | Method and apparatus for cement bond logging | Jean Pierre Masson, Robert A. Lester | 1988-07-12 |