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F23D2212/005—Radiant gas burners made of specific materials, e.g. rare earths
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FR416867A1910-06-071910-06-07Dispositif de foyer lumineux à haute incandescence par l'acétylène ou tout autre gaz combustible mélangé à l'oxygène
ExpiredFR416867A
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Composition de terres rares pour lumière à incandescence au moyen de chalumeaux à gaz combinés, et dispositif pour l'utilisation de cette composition