Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5774415 | Geophone normalization process | James Willers | 1998-06-30 |
| 4710593 | Geophone cable splice and method | Jeffrey Buis | 1987-12-01 |
| 4663747 | Variflux vibration transducer | — | 1987-05-05 |
| 4334296 | Seismic method and apparatus | — | 1982-06-08 |
| 4253164 | Multi-purpose seismic transducer | — | 1981-02-24 |