Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10436323 | Piston ring having a groove seal | Richard Mittler | 2019-10-08 |
| 9671019 | Piston ring with a periodically varying groove | Richard Mittler | 2017-06-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10436323 | Piston ring having a groove seal | Richard Mittler | 2019-10-08 |
| 9671019 | Piston ring with a periodically varying groove | Richard Mittler | 2017-06-06 |