Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8061471 | Seismic vibrator controlled by directly detecting base plate motion | — | 2011-11-22 |
| 7987943 | Apparatus and method for generating a seismic source signal | John Crowell, James Teske | 2011-08-02 |
| 7929380 | Apparatus and method for generating a seismic source signal | John J. Sallas | 2011-04-19 |