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GAZ DE PARIS
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G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N25/00—Investigating or analyzing materials by the use of thermal means
G01N25/14—Investigating or analyzing materials by the use of thermal means by using distillation, extraction, sublimation, condensation, freezing, or crystallisation
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FR17849D1912-05-091913-04-07Appareil indicateur de naphtaline pour le gaz d'éclairage
ExpiredFR17849E
(fr)