• 专利标题: Combined smoke gasket and intumescent expanding seal device for swinging doors
  • 申请号: US701071
    申请日: 1985-02-11
  • 公开(公告)号: USD293935S
    公开(公告)日: 1988-01-26
  • 设计人: George A. Allen, Jr.
  • 申请人: George A. Allen, Jr.
Combined smoke gasket and intumescent expanding seal device for swinging
doors
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