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 FR882868ApublicationCriticalpatent/FR882868A/fr
FR882868D1941-06-051942-06-03Source de radiations comportant un tube à décharges électriques en atmosphère gazeuse et une couche luminescente
ExpiredFR882868A
(fr)
Lampe à lumière mixte comportant une lampe à surpression à mercure placée dans une enveloppe à vide, un revêtement de substance luminescente et un filament lumineux