Cyphelly; Ivan J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Cyphelly; Ivan J..The latest application filed is for "drilling device with hydraulic percussion generator for earth drilling purposes".
- Cyphelly; Ivan J. - Cudrefin CH
- Cyphelly; Ivan J. - 8128 Hinteregg CH
- Cyphelly; Ivan J. - Hinteregg CH
| Patent | Date |
|---|---|
| Drilling device with hydraulic percussion generator for earth drilling purposes Grant 4,958,690 - Cyphelly September 25, 1 | 1990-09-25 |
| Decanter centrifuge having differential drive unit Grant 4,411,646 - Cyphelly October 25, 1 | 1983-10-25 |
| Flow control device for use with positive displacement pump Grant 4,265,267 - Cyphelly May 5, 1 | 1981-05-05 |
| Multi-way rotary valve for a fluid under pressure Grant 4,205,821 - Cyphelly June 3, 1 | 1980-06-03 |
| Hydraulic push drive for pusher centrifuges Grant 4,173,303 - Cyphelly November 6, 1 | 1979-11-06 |
| Fluid pressure unit with hydrostatic torque transmission by roller pistons Grant 4,144,798 - Cyphelly March 20, 1 | 1979-03-20 |
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