Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8141189 | Formed front header for a dock leveler | Michael A. Mitchell, Timothy Muhl, Matthew Tourdot, Jack Morehart, Grant Leum +2 more | 2012-03-27 |
| 7546655 | Formed front header for a dock leveler | Michael A. Mitchell, Timothy Muhl, Matthew Tourdot, Jack Morehart, Grant Leum +2 more | 2009-06-16 |
| 7363670 | Formed front header for a dock leveler | Michael A. Mitchell, Timothy Muhl, Matthew Tourdot, Jack Morehart, Grant Leum +2 more | 2008-04-29 |
| 6832403 | Moveable bumper for a dock leveler | Norbert Hahn, Edward A. Raleigh | 2004-12-21 |
| 6634049 | Moveable bumper for a dock leveler | Norbert Hahn, Edward A. Raleigh | 2003-10-21 |
| 6499169 | Recycle control system for dock levelers | Norbert Hahn, Mike Jehn, Robert Stoewe | 2002-12-31 |
| 6065172 | Hydraulic control circuit | — | 2000-05-23 |
| 5882167 | Locking mechanism for a vehicle restraint | Norbert Hahn | 1999-03-16 |
| 5440772 | Vehicle-activated safety leg control system for a dock leveler assembly | Scott L. Springer, Norbert Hahn | 1995-08-15 |
| 5271183 | Safety barrier assembly | Norbert Hahn, Gregory S. Hahn | 1993-12-21 |
| 4843373 | Loading dock signal and control system | Glen Trickle | 1989-06-27 |
| 4744121 | Loading dock and hydraulic system therefor | Lynn O. Grunewald, Norbert Hahn | 1988-05-17 |
| 4570277 | Leveler assembly | Norbert Hahn | 1986-02-18 |
| 4531248 | Dockboard assembly | Norbert Hahn | 1985-07-30 |
| 4443150 | Releasable locking device | Norbert Hahn, Steven J. Hipp | 1984-04-17 |