Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6910239 | Dock leveler having an inflatable member | — | 2005-06-28 |
| 6760944 | Dock leveler having an inflatable member | — | 2004-07-13 |
| 6711774 | Dock leveler having an inflatable member | — | 2004-03-30 |
| 6585211 | Wheel chocking device and method for using the same | Martin P. Hageman, Thomas J. Palus, Jack L. Sherard | 2003-07-01 |
| 6478525 | Wheel chocking device and method for using the same | Martin P. Hageman, Thomas J. Palus, Jack L. Sherard | 2002-11-12 |
| 6460212 | Dock leveler having an inflatable member | Douglas H. Massey | 2002-10-08 |
| 6250432 | Wheel chocking device and method for using the same | Martin P. Hageman, Thomas J. Palus, Jack L. Sherard | 2001-06-26 |
| 5802650 | Dock leveler having an inflatable member | Douglas H. Massey | 1998-09-08 |
| 5651155 | Support mechanism for a dockleveler lift bag | Robert J. Warner, Jr. | 1997-07-29 |
| 5600859 | Dock leveler in which the ramp is raised and lowered using an inflatable member and method of use | Martin P. Hageman, Monroe Mulder | 1997-02-11 |
| 5500968 | Dock leveler incorporating an inflatable bag | — | 1996-03-26 |
| 5481774 | Support mechanism for a dockleveler lift bag | Robert J. Warner, Jr. | 1996-01-09 |
| 5471693 | Support and attachment mechanism for a dockleveler lift bag | — | 1995-12-05 |
| 5446938 | Bag construction for a dockleveler | Robert J. Warner, Jr., Donald A. Wagner | 1995-09-05 |