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Invention Grant
US744409A Hay-elevator. 失效
HAY-ELEVATOR。

  • Patent Title: Hay-elevator.
  • Patent Title (中): HAY-ELEVATOR。
  • Application No.: US1903164092
    Application Date: 1903-07-02
  • Publication No.: US744409A
    Publication Date: 1903-11-17
  • Inventor: ROWLAND DAVID E
  • Applicant: NEY MFG COMPANY
  • Assignee: Ney Mfg Company
  • Current Assignee: Ney Mfg Company
  • Priority: US1903164092 1903-07-02
Hay-elevator.
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