Issued Patents All Time
Showing 51–67 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4358248 | Sonic pump for pumping wells and the like employing dual transmission lines | — | 1982-11-09 |
| 4342364 | Apparatus and method for coupling sonic energy to the bore hole wall of an oil well to facilitate oil production | — | 1982-08-03 |
| 4337158 | Cyclic wave system for unclogging water screens | — | 1982-06-29 |
| 4323119 | Vibratory apparatus for mining shale oil or the like | — | 1982-04-06 |
| 4299279 | Apparatus for sonically extracting oil well liners | — | 1981-11-10 |
| 4280558 | Sonic technique and system for facilitating the extraction of mineral material | — | 1981-07-28 |
| 4280557 | Sonic apparatus for cleaning wells, pipe structures and the like | — | 1981-07-28 |
| 4271915 | Elastically vibratory longitudinal jacketed drill | — | 1981-06-09 |
| 4266619 | Down hole cycloidal drill drive | — | 1981-05-12 |
| 4265129 | Orbiting mass oscillator with oil film cushioned bearings | — | 1981-05-05 |
| 4261425 | Mechanically nutating drill driven by orbiting mass oscillator | — | 1981-04-14 |
| 4257648 | Non-resonant cyclic drive system employing rectification of the cyclic output | — | 1981-03-24 |
| 4256190 | Sonically assisted lubrication of journal bearings | — | 1981-03-17 |
| 4252189 | Vibratory method for minimg shale oil or the like | — | 1981-02-24 |
| 4236580 | Method and apparatus for sonically extracting oil well liners | — | 1980-12-02 |
| 4223749 | Rotary earth boring drill bit with centrifugal foreign particle barrier device | Ernest A. von Seggern | 1980-09-23 |
| 4218849 | Sonic method and apparatus for activating a fluid in treating material or polishing parts employing coupling resonator member | — | 1980-08-26 |