Combined smoke gasket and intumescent expanding seal device for sliding elevator doors and the like

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USD279409S Combined smoke gasket and intumescent expanding seal device for sliding elevator doors and the like 失效

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专利标题： Combined smoke gasket and intumescent expanding seal device for sliding elevator doors and the like
申请号： US444687

申请日： 1982-11-23
公开(公告)号： USD279409S

公开(公告)日： 1985-06-25
设计人: George A. Allen, Jr.
申请人： George A. Allen, Jr.

Combined smoke gasket and intumescent expanding seal device for sliding
elevator doors and the like

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