Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6138634 | Oil lubrication system for an internal combustion engine | David W. Kusche | 2000-10-31 |
| 6067952 | Cylinder bore lubrication with residual oil | Kenneth G. Appleby, David W. Kusche, Steven W. Habeck | 2000-05-30 |
| 6058900 | Internal combustion engine with improved cylinder wall lubrication system | David W. Kusche | 2000-05-09 |
| 6012421 | Internal combustion engine with improved lubrication system | David W. Kusche, James P. Wagner | 2000-01-11 |
| 5950588 | Oil lubrication system for an internal combustion engine | David W. Kusche | 1999-09-14 |