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发明名称
摘要
申请公布号
JPS502531(A)
申请公布日期
1975.01.11
申请号
JP19730050513
申请日期
1973.05.07
申请人
发明人
分类号
G03B9/08;G03B7/00;G03B9/36;G03B19/12
主分类号
G03B9/08
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