Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689954 | Exhaust gas manifold for an internal combustion engine and method of making such exhaust gas manifold | Pierre Bonny, Thomas Hulsberg, Ralf Punjer | 1997-11-25 |
| 5682741 | Exhaust manifold for an internal combustion engine | Helmut Augustin, Pierre Bonny, Wolfgang Jekel, Hans-Jorg Kaifel, Berndt Schutz | 1997-11-04 |