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Invention Grant
US2806958A Radiographic diaphragm and method of making the same 失效
射线照相隔膜及其制作方法

  • Patent Title: Radiographic diaphragm and method of making the same
  • Patent Title (中): 射线照相隔膜及其制作方法
  • Application No.: US40541254
    Application Date: 1954-01-21
  • Publication No.: US2806958A
    Publication Date: 1957-09-17
  • Inventor: ZUNICK MICHAEL J
  • Applicant: GEN ELECTRIC
  • Assignee: Gen Electric
  • Current Assignee: Gen Electric
  • Priority: US40541254 1954-01-21
  • Main IPC: G21K1/02
  • IPC: G21K1/02
Radiographic diaphragm and method of making the same
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