Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6176888 | Composite cutting body, containing diamond particles and methods for its production | Walter Ritt, Wolfgang Tillmann, Johann Dorfmeister, Manfred Horst Boretius | 2001-01-23 |
| 5876845 | Cutter member for material removal tool | Walter Ritt, Peter Jost | 1999-03-02 |
| 5733074 | Manual tool for removing material from brittle and/or non-ductile stock | Maximilian Stock, Josef Obermeier, Peter Ofner | 1998-03-31 |
| 5069584 | Hollow drilling tool | Josef Obermeier, Walter Ritt, Ernst Wohlwend, Horst-Detlef Gassmann, Peter Cavada | 1991-12-03 |
| 4966502 | Hollow drilling tool | — | 1990-10-30 |
| 4915182 | Cutter elements for hollow drill bit | Walter Ritt | 1990-04-10 |