Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6460564 | Automatic-locking shut-off valve for liquid suction systems | Dieter J. Rief | 2002-10-08 |
| 6289918 | Automatic locking bypass valve for liquid suction systems | Dieter J. Rief | 2001-09-18 |
| 6131227 | Suction regulating skirt for automated swimming pool cleaner heads | Dieter J. Rief | 2000-10-17 |