Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4300291 | Methods and apparatus for heating particulate material | Harold Heard | 1981-11-17 |
| 4236318 | Methods and apparatus for heating particulate material | Harold Heard | 1980-12-02 |
| 4199549 | Method of operating an incinerator | Floyd L. Schauermann | 1980-04-22 |