| 6120252 |
Gas separation control in a centrifugal pump/vacuum pump |
Reijo Vesala, Vesa Vikman |
2000-09-19 |
| 5842833 |
Gas separation control in a centrifugal pump vacuum pump |
Reijo Vesala, Vesa Vikman |
1998-12-01 |
| 5538597 |
Apparatus for the discharge of a mass tower |
Arto Koso, Reijo Vesala |
1996-07-23 |
| 5228829 |
Method and apparatus for dividing flow of high-consistency fiber suspension |
Toivo Niskanen, Jukka Timperi, Reijo Vesala, Vesa Vikman |
1993-07-20 |
| 4964950 |
Method and apparatus for dividing and uniting the flows of high-consistency fibre suspensions |
Toivo Niskanen |
1990-10-23 |
| 4435193 |
Controlling operation of a centrifugal pump |
Johan Gullichsen, Esko Härkönen, Toivo Niskanen, Jaakko Kujala |
1984-03-06 |
| 4410337 |
Method and an apparatus for separating a gas from a fibre suspension |
Johan Gullichsen, Jaakko Kujala, Toivo Niskanen, Esko Härkönen |
1983-10-18 |