Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831859 | Extrusion tool for producing a drill bit blank | Alfons Lomberg | 1989-05-23 |
| 4779440 | Extrusion tool for producing hard-metal or ceramic drill blank | Alfons Lomberg | 1988-10-25 |