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G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
G01N9/26—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring pressure differences
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FR765096D1932-12-071933-12-07Appareil pour le contrôle de la densité de l'apprêt dans les bacs d'apprêt
ExpiredFR765096A
(fr)