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Invention Grant
US1431471A Process for making rubber acid-proof containers 失效
制造橡胶防酸容器的工艺

  • Patent Title: Process for making rubber acid-proof containers
  • Patent Title (中): 制造橡胶防酸容器的工艺
  • Application No.: US50279521
    Application Date: 1921-09-23
  • Publication No.: US1431471A
    Publication Date: 1922-10-10
  • Inventor: JOHN LEHR
  • Applicant: MILLER RUBBER CO
  • Assignee: Miller Rubber Co
  • Current Assignee: Miller Rubber Co
  • Priority: US50279521 1921-09-23
  • Main IPC: B29D99/00
  • IPC: B29D99/00
Process for making rubber acid-proof containers
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