Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Application grantedgrantedCritical
Publication of FR714185ApublicationCriticalpatent/FR714185A/fr
H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
FR714185D1930-04-031931-04-01Tube à décharges électriques dans lequel la décharge s'effectue dans une atmosphère contenant une vapeur
ExpiredFR714185A
(fr)