Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE32995 | Variable cylinder hydraulic vibrator and control system | — | 1989-07-25 |
| 4730692 | Apparatus for marine shear wave prospecting | Graydon L. Brown | 1988-03-15 |
| 4705137 | Marine shear wave vibrator | — | 1987-11-10 |
| 4641725 | Wide dynamic range hydraulic vibrator | Jack H. Cole | 1987-02-10 |
| 4506758 | High frequency reaction mass and hydraulic cylinder assembly | — | 1985-03-26 |
| 4492285 | Mobile high frequency vibrator system | Paul L. Buller | 1985-01-08 |
| 4442916 | Underwater shear wave vibrator coupling | — | 1984-04-17 |
| 4406345 | Seismic transducer baseplate and housing assembly | — | 1983-09-27 |
| 4388981 | Variable cylinder hydraulic vibrator and control system | — | 1983-06-21 |
| 4334592 | Sea water hydraulic fluid system for an underground vibrator | — | 1982-06-15 |