Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5455804 | Vortex chamber mud pulser | Frank B. Vanaman, Tadeusz M. Drzewiecki | 1995-10-03 |
| 4862837 | Fuel injection of coal slurry using vortex nozzles and valves | — | 1989-09-05 |
| 4557295 | Fluidic mud pulse telemetry transmitter | — | 1985-12-10 |
| 4418721 | Fluidic valve and pulsing device | — | 1983-12-06 |
| 4391299 | Electro fluidic actuator | — | 1983-07-05 |
| 4323991 | Fluidic mud pulser | Stacy Earl Gehman, Maurice F. Funke | 1982-04-06 |
| 4291395 | Fluid oscillator | — | 1981-09-22 |
| 4276943 | Fluidic pulser | — | 1981-07-07 |