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.)
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Ind Radioelectriques SA Des
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Ind Radioelectriques SA Des
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Application filed by Ind Radioelectriques SA DesfiledCriticalInd Radioelectriques SA Des
Application grantedgrantedCritical
Publication of FR900636ApublicationCriticalpatent/FR900636A/fr
H01J21/06—Tubes with a single discharge path having electrostatic control means only
H01J21/10—Tubes with a single discharge path having electrostatic control means only with one or more immovable internal control electrodes, e.g. triode, pentode, octode
H01J21/14—Tubes with means for concentrating the electron stream, e.g. beam tetrode
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J2893/00—Discharge tubes and lamps
H01J2893/0029—Electron beam tubes
FR900636D1943-08-111943-08-11Perfectionnements aux tubes pour ondes très courtes
ExpiredFR900636A
(fr)