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发明名称
摘要
申请公布号
JPS50144125(A)
申请公布日期
1975.11.19
申请号
JP19740050997
申请日期
1974.05.08
申请人
发明人
分类号
F16L9/02;B21C23/08
主分类号
F16L9/02
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