Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6644210 | Shopping cart conveyor with front wheel alignment and turning system | Michael Sohn, Craig S. Schmidt | 2003-11-11 |
| 6490979 | Inclined shopping cart conveyor system | Michael Sohn, Craig S. Schmidt | 2002-12-10 |
| 6394260 | Conveyor system including roller-guided carriage assemblies | Gene M. Barth | 2002-05-28 |
| 5941347 | Portable lift | Gene M. Barth | 1999-08-24 |
| 5228537 | Safety mechanism for a vertical reciprocating conveyor | Gene M. Barth | 1993-07-20 |
| 5205379 | Vertical conveyor | — | 1993-04-27 |
| 4987992 | Material transfer apparatus | — | 1991-01-29 |
| 4227463 | Apparatus for removing and installing batteries | — | 1980-10-14 |