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Invention Grant
US912382A Stay-roller for car-doors. 失效
汽车门的滚子。

  • Patent Title: Stay-roller for car-doors.
  • Patent Title (中): 汽车门的滚子。
  • Application No.: US1908453723
    Application Date: 1908-09-19
  • Publication No.: US912382A
    Publication Date: 1909-02-16
  • Inventor: KEELER HERBERT E
  • Applicant: KEELER HERBERT E
  • Assignee: Herbert E Keeler
  • Current Assignee: Herbert E Keeler
  • Priority: US1908453723 1908-09-19
Stay-roller for car-doors.
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