Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE36584 | Method for controlling a vacuum cleaner or a central vacuum cleaner | Jouko Harkonen | 2000-02-29 |
| 4829626 | Method for controlling a vacuum cleaner or a central vacuum cleaner | Jouko Harkonen | 1989-05-16 |
| 4587687 | Mounting piece for suction hose of a central vacuum cleaning system | Alpo Ikonen, Raimo Lehtolahti | 1986-05-13 |