Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4986374 | Apparatus for driving an upwardly directed shaft in rock | Lars-Erik Andersson | 1991-01-22 |
| 4592282 | Charging apparatus for cartridged explosives | Ingvar Hansson | 1986-06-03 |