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发明名称
摘要
申请公布号
JPS56668(B2)
申请公布日期
1981.01.09
申请号
JP19760120044
申请日期
1976.10.05
申请人
发明人
分类号
F16L33/00;F16L33/24;F16L33/28
主分类号
F16L33/00
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代理人
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地址
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