Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5005422 | Method and apparatus for measuring subsidence | Mario Ruscev | 1991-04-09 |
| 4916312 | Device for placing a radioactive source in a formation through which a borehole passes | Ian C. Ellis, Fernand Fourcade | 1990-04-10 |