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
Priority to ES0244773ApriorityCriticalpatent/ES244773A1/en
Publication of ES244773A1publicationCriticalpatent/ES244773A1/en
Electric discharge tube device having an indirect heating cathode, suitable for use in circuit arrangements where a voltage difference of more than 100 volts may occur between the filament and the cathode cylinder, the filament being surrounded and centered by a filamentary support body, characterized by the fact that the support body consists of a bare metal and is secured in the tube completely independent of the cathode cylinder. (Machine-translation by Google Translate, not legally binding)
ES0244773A1958-10-201958-10-20Electrical discharge pipe device (Machine-translation by Google Translate, not legally binding)
ExpiredES244773A1
(en)