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Invention Grant
US1020002A Corrugated culvert. 失效
腐蚀CULVERT。

  • Patent Title: Corrugated culvert.
  • Patent Title (中): 腐蚀CULVERT。
  • Application No.: US1911662044
    Application Date: 1911-11-23
  • Publication No.: US1020002A
    Publication Date: 1912-03-12
  • Inventor: WARNER GEORGE W
  • Applicant: WARNER GEORGE W
  • Assignee: George W Warner
  • Current Assignee: George W Warner
  • Priority: US1911662044 1911-11-23
Corrugated culvert.
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