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Invention Grant
US1040247A Engine-valve gear. 失效
发动机齿轮。

  • Patent Title: Engine-valve gear.
  • Patent Title (中): 发动机齿轮。
  • Application No.: US1911637842
    Application Date: 1911-07-10
  • Publication No.: US1040247A
    Publication Date: 1912-10-01
  • Inventor: BEELER SAMUEL E
  • Applicant: FRICK CO
  • Assignee: Frick Co
  • Current Assignee: Frick Co
  • Priority: US1911637842 1911-07-10
Engine-valve gear.
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