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摘要
申请公布号
BE651636(A)
申请公布日期
1964.12.01
申请号
BE19640651636
申请日期
1964.08.10
申请人
发明人
分类号
F16L37/10;F16L37/113;F16L37/252;F16L37/42
主分类号
F16L37/10
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