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发明名称
摘要
申请公布号
DE2033507(A1)
申请公布日期
1972.01.13
申请号
DE19702033507
申请日期
1970.07.07
申请人
发明人
分类号
E04B9/36;E04F13/08;(IPC1-7):E04B5/62
主分类号
E04B9/36
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