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
Publication of ES224986A1publicationCriticalpatent/ES224986A1/en
Light discharge tube comprising an activated cathode with alkaline earth oxides or similar materials, characterized in that the anode consists, at least on its surface, of gold, silver or thorium. (Machine-translation by Google Translate, not legally binding)
ES0224986A1954-11-161955-11-12Light discharge pipe (Machine-translation by Google Translate, not legally binding)
ExpiredES224986A1
(en)
Improvements in the manufacture of cold cºtodo luminous tubes based on an activated element (Machine-translation by Google Translate, not legally binding)