FR27915E - Procédé et dispositif perfectionnés pour régler le degré de vide des tubes à rayons chi et autres tubes à décharge électrique
- Google Patents
Procédé et dispositif perfectionnés pour régler le degré de vide des tubes à rayons chi et autres tubes à décharge électrique
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BRITISH SCIENT INSTR RES ASS
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BRITISH SCIENT INSTR RES ASS
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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
FR27915D1921-03-241923-07-09Procédé et dispositif perfectionnés pour régler le degré de vide des tubes à rayons chi et autres tubes à décharge électrique
ExpiredFR27915E
(fr)