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Invention Grant
US1087682A Resilient tread. 失效
灵活的TREAD。

  • Patent Title: Resilient tread.
  • Patent Title (中): 灵活的TREAD。
  • Application No.: US1912709648
    Application Date: 1912-07-16
  • Publication No.: US1087682A
    Publication Date: 1914-02-17
  • Inventor: PRATT PHILIP W
  • Applicant: PRATT PHILIP W
  • Assignee: Philip W Pratt
  • Current Assignee: Philip W Pratt
  • Priority: US1912709648 1912-07-16
Resilient tread.
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