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
GB13605/39A
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.)
Mullard Radio Valve Co Ltd
Original Assignee
Mullard Radio Valve Co Ltd
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 Mullard Radio Valve Co LtdfiledCriticalMullard Radio Valve Co Ltd
Publication of GB528425ApublicationCriticalpatent/GB528425A/en
528,425. Thermionic valves. MULLARD RADIO VALVE CO., Ltd. May 6, 1939, No. 13605. Convention date, May 9, 1938. Drawings to Specification. [Class 39 (i)] In a thermionic valve with the suppressor grid having a variable pitch and the control grid a constant pitch, the wider apertures in the suppressor grid are opposite that part of the electron path having large space charge. With a rectangular cathode the wider apertures are opposite the broader face.
GB13605/39A1938-05-091939-05-06Improvements in thermionic valves
ExpiredGB528425A
(en)