Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6315181 | Ladder rack apparatus and method | Jeffrey Wierschke | 2001-11-13 |
| 6131631 | Press plug support for tire inflation system | Mark Kevin Hennig | 2000-10-17 |
| 5868881 | Rotary air coupling for tire inflation system | — | 1999-02-09 |
| D315282 | Cordless driver/drill or similar article | Michael Schmidt | 1991-03-12 |
| 4400036 | Corner-cutting mining assembly | — | 1983-08-23 |