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Invention Grant
US1636995A Driving mechanism for sewing-machine batteries 失效
缝纫机电池驱动机构

  • Patent Title: Driving mechanism for sewing-machine batteries
  • Patent Title (中): 缝纫机电池驱动机构
  • Application No.: US11934026
    Application Date: 1926-06-29
  • Publication No.: US1636995A
    Publication Date: 1927-07-26
  • Inventor: HANSON JOHN R
  • Applicant: HANSON JOHN R
  • Assignee: John R Hanson
  • Current Assignee: John R Hanson
  • Priority: US11934026 1926-06-29
  • Main IPC: D05B69/16
  • IPC: D05B69/16
Driving mechanism for sewing-machine batteries
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