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发明名称
摘要
申请公布号
JPS448864(Y1)
申请公布日期
1969.04.10
申请号
JP19660020746U
申请日期
1966.03.07
申请人
发明人
分类号
G03B27/26;(IPC1-7):G03B27/26
主分类号
G03B27/26
代理机构
代理人
主权项
地址
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