Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8079627 | Device for vertically holding pipes | Jens Lutzhöft, Jörn Grotherr, Ronaldus R. M. Rölling | 2011-12-20 |
| 7296630 | Hands-free bail-elevator locking device with combined power/control connector, bail spreader and method for use | Jens Lutzhoeft, Jörn Grotherr | 2007-11-20 |
| 7216717 | Dual elevator system and method | Jens Lutzhoeft, Jörn Grotherr | 2007-05-15 |