Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5954457 | Hand-held device | Ferdinand Kristen, Arno Thiel | 1999-09-21 |
| 5879111 | Hand-held device | Ferdinand Kristen, Arno Thiel | 1999-03-09 |
| 5820312 | Device for transmitting impulse-like blows to a continuously rotatable tool bit | Boris Koller, Martin Richter, Hans-Werner Bongers-Ambrosius | 1998-10-13 |
| 5806609 | Manually operable tool for drilling and/or removing material in brittle and/or low ductile material | Werner Kaibach, Reinhard Schulz, Hans-Werner Bongers-Ambrosius, Ralf Ludwig, Hanspeter Schad +1 more | 1998-09-15 |
| 5733074 | Manual tool for removing material from brittle and/or non-ductile stock | Josef Obermeier, Eugen Magyari, Peter Ofner | 1998-03-31 |
| 5492187 | Twist drill | Axel Neukirchen, Rainer Batliner, Ralf Baumann | 1996-02-20 |
| 5417526 | Hollow crown drill with end face cutting members | Ernst Wohlwend, William Ott | 1995-05-23 |
| 5271696 | Tool bit for machining materials | — | 1993-12-21 |
| 5265989 | Drilling and chiseling bit with a cutting member in a base member | — | 1993-11-30 |
| 5172780 | Hard metal or hard material tipped drilling, chipping and cutting tools | Rainer Batliner | 1992-12-22 |