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发明名称
摘要
申请公布号
BE702601(A)
申请公布日期
1968.02.12
申请号
BED702601
申请日期
1967.08.11
申请人
发明人
分类号
F16L59/02;F16L59/04
主分类号
F16L59/02
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代理人
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地址
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