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Invention Grant
US851799A Electric traction system. 失效
电动牵引系统。

  • Patent Title: Electric traction system.
  • Patent Title (中): 电动牵引系统。
  • Application No.: US1906319753
    Application Date: 1906-06-01
  • Publication No.: US851799A
    Publication Date: 1907-04-30
  • Inventor: CHURCHWARD ALEXANDER
  • Applicant: GEN ELECTRIC
  • Assignee: Gen Electric
  • Current Assignee: Gen Electric
  • Priority: US1906319753 1906-06-01
Electric traction system.
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