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International Standard Electric Corp
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International Standard Electric Corp
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Application grantedgrantedCritical
Publication of FR951024ApublicationCriticalpatent/FR951024A/en
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
FR951024D1944-07-081947-08-05
Beam type electronic discharge devices
ExpiredFR951024A
(en)