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Invention Grant
US823196A System of train control. 失效

  • Patent Title: System of train control.
  • Application No.: US1905290175
    Application Date: 1905-03-16
  • Publication No.: US823196A
    Publication Date: 1906-06-12
  • Inventor: SUNDH AUGUST
  • Applicant: SUNDH AUGUST
  • Assignee: August Sundh
  • Current Assignee: August Sundh
  • Priority: US1905290175 1905-03-16
System of train control.
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