Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8727040 | Drill string valve and method | Derryl Schroeder | 2014-05-20 |
| 8539975 | Drill string valve and method | Derryl Schroeder | 2013-09-24 |
| 6960912 | Magnetic field sensor device | Johannes Beichler, Michael Engelstaedter, Claude Goethals, Achim Kipper, Markus Settegast | 2005-11-01 |
| 4727757 | Ferro-magnetic foil for a torque sensor | Hans-Rainer Hilzinger, Hans-Joachim Nilius | 1988-03-01 |
| 4719958 | Method, apparatus and feeder sleeves for the production of casting moulds | Helmut Schopp | 1988-01-19 |
| 4703550 | Method for manufacturing a torque sensor | Hans-Rainer Hilzinger, Hans-Joachim Nilius | 1987-11-03 |
| 4507651 | Contact-free push-button key for generating an electrical signal upon depression thereof | Richard Boll | 1985-03-26 |