Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7779984 | Arrangement for extracting extraction products in underground extraction operations in caving | Harry Martin, Juan Delgado, Victor Raúl Encina Montenegro, Pablo Antonio Letelier Parga, Jaime Hernán Carreño Valdés +6 more | 2010-08-24 |
| 7350874 | Method and device for extracting extraction products in underground mining | Reinhold Brüggemann, Detlef Hahn, Frank Fischer, Jochen Hammel, Jorg Wirtz +8 more | 2008-04-01 |