发明授权
US1767532A Process of making continuous waterproof sheets and product thereof 失效
制造连续防水片材及其制品的工艺

  • 专利标题: Process of making continuous waterproof sheets and product thereof
  • 专利标题(中): 制造连续防水片材及其制品的工艺
  • 申请号: US64111323
    申请日: 1923-05-24
  • 公开(公告)号: US1767532A
    公开(公告)日: 1930-06-24
  • 发明人: LESTER KIRSCHBRAUN
  • 申请人: FLINTKOTE CO
  • 专利权人: Flintkote Co
  • 当前专利权人: Flintkote Co
  • 优先权: US64111323 1923-05-24
  • 主分类号: D21J1/00
  • IPC分类号: D21J1/00
Process of making continuous waterproof sheets and product thereof
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