Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5924446 | Control apparatus for liquid medium | Hannu Trygg, Esa Salovaara | 1999-07-20 |
| 5758639 | Combination of a helmet and a respiratror and a method for using it | — | 1998-06-02 |
| 4587687 | Mounting piece for suction hose of a central vacuum cleaning system | Raimo Lehtolahti, Reino Mustalampi | 1986-05-13 |