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Invention Grant
US819649A Churn-operator. 失效
操作员

  • Patent Title: Churn-operator.
  • Patent Title (中): 操作员
  • Application No.: US1905255424
    Application Date: 1905-04-13
  • Publication No.: US819649A
    Publication Date: 1906-05-01
  • Inventor: HAM JAMES T
  • Applicant: HAM JAMES T
  • Assignee: James T Ham
  • Current Assignee: James T Ham
  • Priority: US1905255424 1905-04-13
Churn-operator.
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