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Invention Grant
US2642609A Adjustable handle mounting for window-cleaning devices 失效
可拆卸的手柄安装用于窗户清洁设备

  • Patent Title: Adjustable handle mounting for window-cleaning devices
  • Patent Title (中): 可拆卸的手柄安装用于窗户清洁设备
  • Application No.: US19667550
    Application Date: 1950-11-20
  • Publication No.: US2642609A
    Publication Date: 1953-06-23
  • Inventor: HRUSKA JOSEPH J
  • Applicant: HRUSKA JOSEPH J
  • Assignee: Joseph J Hruska
  • Current Assignee: Joseph J Hruska
  • Priority: US19667550 1950-11-20
  • Main IPC: A47L1/09
  • IPC: A47L1/09
Adjustable handle mounting for window-cleaning devices
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