Invention Grant
US1264695A Stay-bolt-inspection port. 失效
保持检查口。

  • Patent Title: Stay-bolt-inspection port.
  • Patent Title (中): 保持检查口。
  • Application No.: US16205017
    Application Date: 1917-04-14
  • Publication No.: US1264695A
    Publication Date: 1918-04-30
  • Inventor: SIEGFRIED IRA D
  • Applicant: SIEGFRIED IRA D
  • Assignee: Ira D Siegfried
  • Current Assignee: Ira D Siegfried
  • Priority: US16205017 1917-04-14
Stay-bolt-inspection port.
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