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Flow-altering refiner segment
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Patent number 11,555,273
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Issue date Jan 17, 2023
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ANDRITZ INC.
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Luc Gingras
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Blade segment for refiner
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Patent number 11,142,869
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Issue date Oct 12, 2021
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Valmet Technologies, Inc.
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Håkan Sjöström
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Refiner
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Patent number 10,400,393
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Issue date Sep 3, 2019
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Valmet AB
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Anders Hawén
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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Refining surface for a refiner
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Patent number 8,474,739
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Issue date Jul 2, 2013
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Metso Paper, Inc.
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Ville Ruola
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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Refiner
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Patent number 8,226,023
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Issue date Jul 24, 2012
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Metso Paper, Inc.
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Petteri Vuorio
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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Welded conical grinding cutter
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Patent number 4,840,318
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Issue date Jun 20, 1989
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Yhtyneet Paperitehtaat oy Jylhavaara
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Helmer Gustafsson
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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3412946
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Patent number 3,412,946
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Issue date Nov 26, 1968
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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3327956
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Patent number 3,327,956
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Issue date Jun 27, 1967
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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3305183
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Patent number 3,305,183
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Issue date Feb 21, 1967
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE