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Invention Grant
US2231135A Wiper attachment for metalworking machines 失效
金属加工机的刮水器附件

  • Patent Title: Wiper attachment for metalworking machines
  • Patent Title (中): 金属加工机的刮水器附件
  • Application No.: US16292237
    Application Date: 1937-09-08
  • Publication No.: US2231135A
    Publication Date: 1941-02-11
  • Inventor: MURRAY MALCOLM G
  • Applicant: NAT TUBE CO
  • Assignee: Nat Tube Co
  • Current Assignee: Nat Tube Co
  • Priority: US16292237 1937-09-08
  • Main IPC: B21C37/30
  • IPC: B21C37/30
Wiper attachment for metalworking machines
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