Ortwein; Hermann
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ortwein; Hermann.The latest application filed is for "railroad substructure".
- Ortwein; Hermann - D-51588 Numbrecht DE
- Ortwein; Hermann - Koln DE
- Ortwein; Hermann - D-500 Koln 60 DE
- Ortwein; Hermann - Cologne DE
| Patent | Date |
|---|---|
| Railroad substructure Grant 6,293,473 - Ortwein , et al. September 25, 2 | 2001-09-25 |
| Ground-borne noise and vibration damping Grant 5,173,012 - Ortwein , et al. December 22, 1 | 1992-12-22 |
| Elastically mounted rails for vehicle tracks Grant 4,775,103 - Ortwein October 4, 1 | 1988-10-04 |
| Rail support Grant 4,723,706 - Ortwein February 9, 1 | 1988-02-09 |
| Resilient ballast underlayment mat including nonwoven fiber fleece layers Grant 4,720,043 - Ortwein January 19, 1 | 1988-01-19 |
| Railway road bed Grant 4,500,037 - Braitsch , et al. February 19, 1 | 1985-02-19 |
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