Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9041335 | Driver circuit and driving method | Mark Heilig, Ulf Rinckleb, Heinrich Steinhart | 2015-05-26 |
| 8568066 | Core hole drilling machine | — | 2013-10-29 |
| 8545139 | Magnetic drilling stand with holding force monitoring | Rudolf Stoppel | 2013-10-01 |
| 7658237 | Power tool having mode controller | Boris Rudolf, Christof Kress | 2010-02-09 |
| 7427842 | Series motor and method of controlling the same | Christof Kress | 2008-09-23 |