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Alsacienne de Constructions Mecaniques SA
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Alsacienne de Constructions Mecaniques SA
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Publication of FR612138ApublicationCriticalpatent/FR612138A/en
H01J13/00—Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
H01J13/02—Details
H01J13/20—Control electrodes, e.g. grid
FR612138D1925-06-261925-06-26
Method of fixing the anode protectors of mercury vapor straighteners with metal receptacles and other similar apparatus
ExpiredFR612138A
(en)
Process for hardening stainless steels with two austenite-ferrite phases, and new stainless steels more particularly suitable for the implementation of this process