Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848382 | Tub bottom soil separator for dishwasher | Roger J. Bertsch, Geoffrey L. Dingler | 1989-07-18 |
| 4822241 | Automatic dishwasher with a pump having a selectively adjustable impeller clearance | John I. Smith | 1989-04-18 |