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
GB24905/45A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
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.)
602,361. Thermionic valves. PHILIPS LAMPS, Ltd. Sept. 25, 1945, No. 24905. Convention date, June 29, 1940. [Class 39 (i)] In multi-grid electron discharge tubes, the grid 6 furthest from the cathode 1 is of the same pitch as the preceding grid 2, and the turns of the two grids are staggered. If there are more grids, the turns are in line with those of the grid 2, none being in line with the turns of the grid 6. Specification 538,198 is referred to. The subject-matter is identical with that of Specification 552,718.
GB24905/45A1940-06-291945-09-25Improvements in or relating to electric discharge tubes
ExpiredGB602361A
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