Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7980908 | Spark plug and method for production of a spark plug | Werner Niessner, Lutz Frassek | 2011-07-19 |
| 7881851 | Method of operating glow plugs in diesel engines | Markus Kernwein, Andreas Beil, Jörg Stöckle, Olaf Toedter | 2011-02-01 |