Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5062061 | Automatic direction control for omni-directional shear wave sources | Truman R. Stiner | 1991-10-29 |
| 4922472 | Apparatus for inducing elliptically polarized shear waves in an earth medium | Jack H. Cole, John S. Gergely, Robert T. Baumel | 1990-05-01 |