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Heikki Ahonen
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Valkeakoski, FI
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last 30 patents
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Patent Grant
Steam generator heated by combination of electric heat and condensa...
Patent number
4,532,413
Issue date
Jul 30, 1985
Yhtyneet Paperitehtaat Oy
Heikki Ahonen
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE