Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6871653 | Method for cleaning an in-sink dishwasher | Ralph E. Christman, Rud J. Lauer | 2005-03-29 |
| 6742531 | In-sink dishwater with self-aligning liquid feed system | Ralph E. Christman, Rud J. Lauer | 2004-06-01 |