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C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
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FR842252D1937-08-191938-08-17Perfectionnements apportés aux procédés pour fabriquer des fils en acide silicique pur, plus spécialement en quartz
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