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.)
Expired
Application number
GB17154/37A
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 GB482992ApublicationCriticalpatent/GB482992A/en
Lubrication Details And Ventilation Of Internal Combustion Engines
(AREA)
Abstract
482,992. Thermionic valves. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. June 19, 1937, No. 17154. Convention date, June 22, 1936. [Class 39 (i)] In a screen grid valve, a grid 5 is placed between the screen grid 3 and the control grid 2, the turns of the grid 5 being in front of those of the screen grid when viewed along planes at right-angles to the cathode 1. The grid 5 may be at zero or negative potential, or may be connected to the cathode inside or outside the tube in order to prevent screen grid current. Further grids in hexodes, octodes &c. may be arranged with their turns in line with those of the grids 5, 3.
GB17154/37A1936-06-221937-06-19Improvements in screen-grid thermionic valves
ExpiredGB482992A
(en)