Invention Grant
US2857643A Contour sheets 失效
轮廓片

  • Patent Title: Contour sheets
  • Patent Title (中): 轮廓片
  • Application No.: US58757556
    Application Date: 1956-05-28
  • Publication No.: US2857643A
    Publication Date: 1958-10-28
  • Inventor: GUY TOMSIC
  • Applicant: GUY TOMSIC
  • Assignee: Tomsic Guy
  • Current Assignee: Tomsic Guy
  • Priority: US58757556 1956-05-28
  • Main IPC: A47G9/02
  • IPC: A47G9/02
Contour sheets
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