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Invention Grant
US844624A Tunnel-crane. 失效
隧道起重机

  • Patent Title: Tunnel-crane.
  • Patent Title (中): 隧道起重机
  • Application No.: US1906314179
    Application Date: 1906-04-28
  • Publication No.: US844624A
    Publication Date: 1907-02-19
  • Inventor: SMITH EDWARD L
  • Applicant: SMITH EDWARD L
  • Assignee: Edward L Smith
  • Current Assignee: Edward L Smith
  • Priority: US1906314179 1906-04-28
Tunnel-crane.
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