Osmo Evalahti

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Karhula, FI

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for guiding wires of a double wire former
- Patent number 4,988,408
- Issue date Jan 29, 1991
- Valmet-Ahlstrom Inc.
- Osmo Evalahti
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Paper machine head box with adjustable perforated plate flow ducts
- Patent number 4,784,726
- Issue date Nov 15, 1988
- A. Ahlstrom Corporation
- Osmo Evalahti
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Damping system for a paper machine headbox
- Patent number 4,426,257
- Issue date Jan 17, 1984
- A. Ahlstrom Osakeyhtio
- Jukka Antikainen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE