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发明名称
摘要
申请公布号
JPS4838490(Y1)
申请公布日期
1973.11.14
申请号
JP19690108582U
申请日期
1969.11.15
申请人
发明人
分类号
B22C9/10;B22C21/08;B22C21/12;B22C23/00;(IPC1-7):B22C9/10
主分类号
B22C9/10
代理机构
代理人
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