Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5496456 | Vibrating conveyor device dipping into a liquid with damping of vibration transmission | Ju/ rgen Fischer, Siegfried Birkle, Werner Elsel, Johann Gehring, Arnolf Maurer | 1996-03-05 |
| 5244564 | Apparatus for electrolytic surface coating of pourable material and method for operating the apparatus | Siegfried Birkle, Johann Gehring | 1993-09-14 |
| 5215641 | Device for transporting bulk material comprising a vibrator conveyor which dips into a liquid | Siegfried Birkle, Werner Elsel, Johann Gehring, Arnolf Maurer | 1993-06-01 |
| 5188718 | Apparatus for electrolytic surface coating of pourable material | Siegfried Birkle, Johann Gehring | 1993-02-23 |
| 4559165 | Transparent conducting layer | Hans Kohlmuller | 1985-12-17 |