Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6669551 | Mine ventilation structure and deck panels therefor | William R. Kennedy | 2003-12-30 |
| 6594954 | Mine door installation | William R. Kennedy | 2003-07-22 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6669551 | Mine ventilation structure and deck panels therefor | William R. Kennedy | 2003-12-30 |
| 6594954 | Mine door installation | William R. Kennedy | 2003-07-22 |