Stier; Ralf
Patent Applications and Registrations
Patent applications and USPTO patent grants for Stier; Ralf.The latest application filed is for "piston having three ring grooves and a further groove having a joint".
- Stier; Ralf - Neuenstadt a.K. DE
| Patent | Date |
|---|---|
| Cooling of a piston by means of sodium-filled tubes Grant 10,787,990 - Stier September 29, 2 | 2020-09-29 |
| Piston Having Three Ring Grooves And A Further Groove Having A Joint App 20190022739 - Ottliczky; Emmerich ; et al. | 2019-01-24 |
| Cooling of a Piston by Means of Sodium-Filled Tubes App 20180252182 - Stier; Ralf | 2018-09-06 |
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