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B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
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FR409771D1909-11-291909-11-29Dispositif pour la séparation du caoutchouc des écorces des plantes caoutchoutifères
ExpiredFR409771A
(fr)