Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6471574 | Dust protection cover for a rotary grinding tool | Hans Rupprecht, Rolf Spangenberg, Rudolf Reitberger, Oliver Ohlendorf | 2002-10-29 |
| 6382202 | Drill bit | Rolf Spangenberg | 2002-05-07 |