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Invention Grant
US833839A Frictional drive mechanism. 失效
摩擦驱动机构。

  • Patent Title: Frictional drive mechanism.
  • Patent Title (中): 摩擦驱动机构。
  • Application No.: US1905263002
    Application Date: 1905-05-31
  • Publication No.: US833839A
    Publication Date: 1906-10-23
  • Inventor: KING GEORGE W
  • Applicant: KING GEORGE W
  • Assignee: George W King
  • Current Assignee: George W King
  • Priority: US1905263002 1905-05-31
Frictional drive mechanism.
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