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发明名称
摘要
申请公布号
BE648731(A)
申请公布日期
1964.12.01
申请号
BE19640648731
申请日期
1964.06.02
申请人
发明人
分类号
E04B1/76;F16B5/02;F16B33/00;F16L3/00;F16L59/12;F17C13/08;H01F6/06
主分类号
E04B1/76
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代理人
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