Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4222817 | Method and apparatus for pulping and grading waste material | Llewellyn E. Clark, John B. Matthew | 1980-09-16 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4222817 | Method and apparatus for pulping and grading waste material | Llewellyn E. Clark, John B. Matthew | 1980-09-16 |