Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4264344 | Diesel engine exhaust particulate trap | Otto A. Ludecke | 1981-04-28 |
| 4211075 | Diesel engine exhaust particulate filter with intake throttling incineration control | Otto A. Ludecke | 1980-07-08 |