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Invention Grant
US1997579A Control system for high frequency apparatus 失效
高频设备控制系统

  • Patent Title: Control system for high frequency apparatus
  • Patent Title (中): 高频设备控制系统
  • Application No.: US70447633
    Application Date: 1933-12-29
  • Publication No.: US1997579A
    Publication Date: 1935-04-16
  • Inventor: GEBHARD LOUIS A
  • Applicant: GEBHARD LOUIS A
  • Assignee: Louis A Gebhard
  • Current Assignee: Louis A Gebhard
  • Priority: US70447633 1933-12-29; US67694833 1933-06-21
  • Main IPC: H01J7/24
  • IPC: H01J7/24
Control system for high frequency apparatus
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