Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5413047 | Overburden removal method with blast casting and excavating apparatus | Randall N. Evans, Marlyn G. King, Robert Ferguson | 1995-05-09 |
| 5194689 | Earth excavation using blast casting and excavating apparatus | — | 1993-03-16 |