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US2506660A Device for the regulation and centering under vacuum of a filament for a wehnelt cathode 失效
用于微孔阴极的灯丝的真空调节和定心的装置

  • Patent Title: Device for the regulation and centering under vacuum of a filament for a wehnelt cathode
  • Patent Title (中): 用于微孔阴极的灯丝的真空调节和定心的装置
  • Application No.: US74859047
    Application Date: 1947-05-16
  • Publication No.: US2506660A
    Publication Date: 1950-05-09
  • Inventor: HENRI BLATTMANN , HENRI BRUCK
  • Applicant: CSF
  • Assignee: Csf
  • Current Assignee: Csf
  • Priority: FR1001312T 1946-04-15
  • Main IPC: H01J21/08
  • IPC: H01J21/08 ;  H01J37/067
Device for the regulation and centering under vacuum of a filament for a wehnelt cathode
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