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
GB1827452A
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.)
MO Valve Co Ltd
Original Assignee
MO 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 MO Valve Co LtdfiledCriticalMO Valve Co Ltd
Priority to GB1827452ApriorityCriticalpatent/GB731613A/en
Publication of GB731613ApublicationCriticalpatent/GB731613A/en
H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
H01J1/02—Main electrodes
H01J1/13—Solid thermionic cathodes
H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
H01J1/28—Dispenser-type cathodes, e.g. L-cathode
Landscapes
Nozzles
(AREA)
Abstract
731,613. Thermionic valves. M-O VALVE CO., Ltd., and ALDOUS, W. H. Oct. 9, 1953 [July 18, 1952], No. 18274/52. Drawings to Specification. Class 39 (1). A thermionic valve comprises a cathode of the kind described in Specification 731,614, i.e. a dispenser cathode having separate heaters for the porous emitting surface and the internal supply of emissive material. A travelling-wave tube is given as an example.
GB1827452A1952-07-181952-07-18Improvements in or relating to thermionic valves
ExpiredGB731613A
(en)