Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7977856 | Spark plug incorporating a folded packing situated on an outer circumference of a housing for position-oriented installation | Detlef Hartmann, Christoph Naumann, Jochen Fischer | 2011-07-12 |