Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4513665 | Method for loading explosive charges into blastholes formed in a subterranean formation | Thomas E. Ricketts | 1985-04-30 |
| 4440447 | Method for forming an in situ oil shale retort with explosive expansion towards a horizontal free face | Thomas E. Ricketts | 1984-04-03 |