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US2120346A Method of making inner tubes 失效
内管制作方法

  • Patent Title: Method of making inner tubes
  • Patent Title (中): 内管制作方法
  • Application No.: US69311433
    Application Date: 1933-10-11
  • Publication No.: US2120346A
    Publication Date: 1938-06-14
  • Inventor: BECKER GEORGE W
  • Applicant: DILL MFG CO
  • Assignee: Dill Mfg Co
  • Current Assignee: Dill Mfg Co
  • Priority: US69311433 1933-10-11
  • Main IPC: B29D23/24
  • IPC: B29D23/24
Method of making inner tubes
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