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D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
D21B1/00—Fibrous raw materials or their mechanical treatment
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(AREA)
Mechanical Engineering
(AREA)
FR525403A1915-02-181920-07-09Procédé pour la fabrication d'une fibrine claire et résistante de bois ou d'autres matières contenant de la cellulose
ExpiredFR525403A
(fr)