Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5217079 | Hydro-impulse screwing device | Konrad Karl Kettner, Heinz-Gerhard Anders | 1993-06-08 |
| 5060772 | Power-operated tool | Heinz-Gerhard Anders, Dieter Weimer | 1991-10-29 |
| 4833952 | Torque limiting screw-tightening tool | Dieter Stein | 1989-05-30 |
| 4467877 | Power tool, in particular a hand-held compressed air screwdriver | Jurgen K. D. Koltermann, Dieter Stein, Bernhard J. Polzer | 1984-08-28 |
| 4320806 | Power tool, in particular a hand-held compressed air screw driver | Jurgen K. D. Koltermann, Dieter Stein, Bernhard J. Polzer | 1982-03-23 |