FR437689A - Perfectionnements apportés aux dispositifs pour l'osmo-réglage des tubes pour la production des rayons x et des appareils analogues
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Perfectionnements apportés aux dispositifs pour l'osmo-réglage des tubes pour la production des rayons x et des appareils analogues
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H01J35/20—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
FR437689A1912-06-281911-12-15Perfectionnements apportés aux dispositifs pour l'osmo-réglage des tubes pour la production des rayons x et des appareils analogues
ExpiredFR437689A
(fr)