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发明名称
摘要
申请公布号
JPS4222702(Y1)
申请公布日期
1967.12.23
申请号
JP19650000676U
申请日期
1965.01.06
申请人
发明人
分类号
G04B19/247;G04B19/24;(IPC1-7):G04B19/24
主分类号
G04B19/247
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代理人
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