| 9033425 |
Pick tool and method for making same |
Bernd Heinrich Ries, Frank Friedrich Lachmann |
2015-05-19 |
| 9028009 |
Pick tool and method for making same |
Bernd Heinrich Ries, Frank Friedrich Lachmann |
2015-05-12 |
| 7455484 |
Cutting or breaking tool as well as cutting insert for the latter |
Heinrich Bauschulte, Marco Schumann, Wolfgang Wald, Martina Stuckardt, Reinhold Walter |
2008-11-25 |
| 6354771 |
Cutting or breaking tool as well as cutting insert for the latter |
Heinrich Bauschulte, Marco Schumann, Wolfgang Wald, Martina Stuckardt, Reinhold Walter |
2002-03-12 |
| 6343842 |
Roller bit for tunnel-driving machines with segmented cutting rings |
Klaus Sauer, Guenter Fennel, Bernd Heinrich Ries, Reinhold Walter |
2002-02-05 |
| 6186597 |
Pick system for mining ploughs, in particular coal ploughs |
Detlef Hahn, Peter Wollenhaupt, Georg Marker, Peter Richter, Wolfgang Wald +1 more |
2001-02-13 |
| 6183170 |
Cylindrical cutting device |
Wolfgang Wald, Martina Stuckardt, Reinhold Walter |
2001-02-06 |