Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4475987 | Method of and apparatus for the mixing and processing of fragile material and fragmentel solids | — | 1984-10-09 |
| 4381988 | Fine particulate removal from oil shale on a travelling grate retort | Daniel Kestner | 1983-05-03 |
| 4381989 | Method of and apparatus for the mixing and processing of fragile material and fragmented solids | — | 1983-05-03 |