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C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B32/00—Carbon; Compounds thereof
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FR614546D1925-04-241926-04-15Procédé et appareil pour l'extraction de carbone du sulfure de carbone et d'autrescomposés analogues
ExpiredFR614546A
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