- 专利标题: Combined smoke gasket and intumescent expanding seal device for swinging doors
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申请号: US701071申请日: 1985-02-11
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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.
公开/授权文献
- US5695699A Heterogenous foam injection molding method 公开/授权日:1997-12-09
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