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发明名称
Ventilated drain hatch
摘要
The stopper (1) can be so mounted on a screw (3) as to form an annular gap between it and the hatch cover (2) material. The stopper can be made of hard or swelling rubber, in the latter case functioning as a membrane.
申请公布号
DE19740405(A1)
申请公布日期
1999.03.25
申请号
DE19971040405
申请日期
1997.09.09
申请人
STREBE, JUERGEN, 17509 LUBMIN, DE
发明人
STREBE, JUERGEN, 17509 LUBMIN, DE
分类号
E02D29/14;E03F5/08;(IPC1-7):E02D29/14
主分类号
E02D29/14
代理机构
代理人
主权项
地址
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