Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4728043 | Mechanical sorting system for crude silicon carbide | Harald Ersdal | 1988-03-01 |
| 4678560 | Screening device and process | Arnstien Lovsland, Egil Havig | 1987-07-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4728043 | Mechanical sorting system for crude silicon carbide | Harald Ersdal | 1988-03-01 |
| 4678560 | Screening device and process | Arnstien Lovsland, Egil Havig | 1987-07-07 |