Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850451 | Device for generating in the ground both transverse and longitudinal acoustic waves in a plurality of different directions | Pierre-Claude Layotte | 1989-07-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850451 | Device for generating in the ground both transverse and longitudinal acoustic waves in a plurality of different directions | Pierre-Claude Layotte | 1989-07-25 |