FR686469A - Procédé de fabrication d'objets en matières fibreuses organiques, dont les pores sont remplis complètement avec des poix à point de fusion élevé
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Procédé de fabrication d'objets en matières fibreuses organiques, dont les pores sont remplis complètement avec des poix à point de fusion élevé
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D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
D21H17/61—Bitumen
FR686469D1928-12-131929-12-12Procédé de fabrication d'objets en matières fibreuses organiques, dont les pores sont remplis complètement avec des poix à point de fusion élevé
ExpiredFR686469A
(fr)