Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4344390 | Piston-cylinder assembly of an internal combustion engine | Hans Heydrich, William C. Geary | 1982-08-17 |
| 4328772 | Combustion chamber for an internal combustion engine | Hans Heydrich, William C. Geary | 1982-05-11 |