Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7052217 | Multiple cutting edge rotary tool | — | 2006-05-30 |
| 6974285 | Fine drill head with slack-free radial displacement | — | 2005-12-13 |
| 6109841 | Drilling tool with replaceable bit | — | 2000-08-29 |
| 5775857 | Tool-holder | — | 1998-07-07 |
| 4786217 | Metal-cutting tool | — | 1988-11-22 |
| 4714389 | Tool holder | — | 1987-12-22 |
| 4632609 | Rotary cutting tool | — | 1986-12-30 |
| 4467679 | Tool head | Hans G. Hartkamp, Hans-Georg Burmester | 1984-08-28 |