Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5841290 | Method for sensing the presence and absence of an object | Dean Bentzien, Hermann Dohl, Frank Riedl | 1998-11-24 |
| 5691647 | Object sensing device and method for using same | Dean Bentzien, Hermann Dohl, Frank Riedl | 1997-11-25 |
| 5307916 | Sensing device | Dean Bentzien, Hermann Dohl | 1994-05-03 |