Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4341739 | Phosphoric acid ammoniation apparatus | John D. Ellis, George Crichton, Millard C. Godwin | 1982-07-27 |
| 4334907 | Phosphoric acid ammoniation process to produce liquid fertilizers | John D. Ellis, George Crichton, Millard C. Godwin | 1982-06-15 |