Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6918299 | Method and apparatus for improving performance of a force balance accelerometer based on a single-coil velocity geophone | Thomas R. VanZandt | 2005-07-19 |
| 6618325 | Method and apparatus for controlling damping and in situ determination of frequency response for high bandwidth force-balance single-coil geophone | Thomas R. VanZandt | 2003-09-09 |
| 6075754 | Single-coil force balance velocity geophone | Thomas R. VanZandt | 2000-06-13 |