Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5632616 | Method and apparatus for injecting air into long cement kilns | James R. Tutt, Eric R. Hansen | 1997-05-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5632616 | Method and apparatus for injecting air into long cement kilns | James R. Tutt, Eric R. Hansen | 1997-05-27 |