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发明名称
摘要
申请公布号
JPH05502283(A)
申请公布日期
1993.04.22
申请号
JP19900511263
申请日期
1990.05.21
申请人
发明人
分类号
F16K1/38;F16K25/04;F16K47/04
主分类号
F16K1/38
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